User:Adil/Timeline of events in the anime/Pokémon the Series: The Beginning and Gold & Silver

The order of many of these events is approximated and debatable.

Timeline

Kanto

Episode	Details
Pokémon, I Choose You!	Ash Ketchum and his rival Gary Oak begin their Pokémon journeys. Ash starts his journey with a disobedient Pikachu, a Pokédex, and six Poké Balls. Ash tries and fails to catch a Pidgey. Ash meets Misty for the first time. Ash steals Misty's bike, which is destroyed when Pikachu defeats a flock of angry Spearow. Ash and Pikachu become friends. Ash sees a mysterious Pokémon. Ash reaches Viridian City.
Pokémon Emergency!	Ash visits a Pokémon Center and meets a Nurse Joy and an Officer Jenny for the first time. Misty introduces herself to Ash and declares that she will follow him until he repays the damages to her bike. Ash and Misty meet Jessie and James, two members of the villainous Team Rocket, along with their partner, a talking Meowth. Misty is revealed to own a Goldeen. The Team Rocket trio decides to follow Ash and steal his Pikachu. Ash prepares to catch a Caterpie.
Ash Catches a Pokémon!	Ash catches the Caterpie from the end of the last episode, making it his first caught Pokémon. Ash also catches a Pidgeotto. Team Rocket reveals to Ash their intention to steal his Pikachu. Meowth is revealed to know Fury Swipes. Caterpie is revealed to know String Shot and Tackle. Ash has his first, although unofficial, Trainer battle, and wins. James's Koffing is revealed to know Sludge. Jessie's Ekans is revealed to know Dig. Ash's Caterpie evolves into Metapod.
Challenge of the Samurai	Ash tries and fails to catch a Weedle. Ash has his first fair Trainer battle, with no official winner. Ash's Pidgeotto is revealed to know Sand Attack. Ash's Metapod is revealed to have learned Harden. Meowth is revealed to know Scratch. Ash's Metapod evolves into Butterfree and learns Sleep Powder.
Showdown in Pewter City	Ash and Misty reach Pewter City Ash learns about the Pokémon League, Gym Leaders, and Gym Badges. Ash and Misty meet Brock, the Pewter Gym Leader, and his father, Flint. Ash has his first Gym battle at the Pewter Gym. Ash forfeits his battle against Brock, suffering his first loss. Ash's Pikachu learns Thunderbolt. Ash has a rematch with Brock, but eventually forfeits again. Brock follows Ash and gives him his first Badge, the Boulder Badge. Brock joins Ash and Misty, leaving the Pewter Gym in his father's care.
Clefairy and the Moon Stone	Brock catches a Zubat. Brock encounters Team Rocket for the first time. Ash's Butterfree and Pidgeotto are revealed to know Whirlwind. Jessie's Ekans is revealed to know Bite. Misty is revealed to own a Staryu. Brock's Onix is revealed to know Dig. James's Koffing is revealed to know Tackle.
Water Flowers of Cerulean City	Ash and his friends arrive in Cerulean City. Ash meets Daisy, Violet, and Lily, the Cerulean Gym Leaders, for the first time. Ash finds out that Gary and the other two Pallet Town Trainers have already defeated the Cerulean Gym. Ash learns that Misty is also one of Cerulean City's Gym Leaders and that Daisy, Violet, and Lily are her sisters. Ash and Misty battle each other for the first time. Misty's Staryu is revealed to know Tackle. Ash's Butterfree is revealed to know Stun Spore. Misty is revealed to own a Starmie. Ash's Pidgeotto is revealed to know Wing Attack. Ash and Misty's Gym battle ends in a no-contest, due to the interruption by Team Rocket. Ash gets the Cascade Badge from Misty's sisters for protecting the Gym from Team Rocket.
The Path to the Pokémon League	Ash learns that there is a Gym in Vermilion City. Jessie's Ekans is revealed to know Wrap. Meowth is revealed to know Bite.
The School of Hard Knocks	Jessie and James are revealed to have been flunked out of the Pokémon Tech in the past. Misty's Starmie is revealed to know Water Gun.
Bulbasaur and the Hidden Village	Misty tries and fails to catch an Oddish. Ash catches a Bulbasaur.
Charmander the Stray Pokémon	Ash catches a Charmander.
Here Comes the Squirtle Squad	Ash and his friends meet the Squirtle Squad. The lead Squirtle of the Squirtle Squad follows Ash and joins his team.
Mystery at the Lighthouse	Ash catches a Krabby. Ash learns that a Trainer can only have six Pokémon on hand at once, and that his extras are automatically sent to reside at Professor Oak's Laboratory. Gary is revealed to have caught a giant Krabby and own a total of 45 Pokémon. Ash and his friends meet Bill.
Electric Shock Showdown	Ash and his friends arrive at Vermilion City and meet the local Gym Leader, Lt. Surge. Ash has a Gym battle with Lt. Surge, but is defeated. Ash receives a Thunder Stone from Nurse Joy. Ash's Pikachu refuses to evolve into Raichu. Ash's Pikachu learns Agility and Quick Attack. Ash challenges Lt. Surge to a rematch and wins, earning a Thunder Badge.
Battle Aboard the St. Anne	Giovanni, the Boss of Team Rocket, is introduced. Ash and his friends set off on a cruise aboard the St. Anne luxury liner. Ash learns about trading. Ash trade his Butterfree for a Gentleman's Raticate, but later trades back. James buys a Magikarp from the Magikarp salesman. The St. Anne sinks with Ash, Misty, Brock, and Team Rocket on board.
Pokémon Shipwreck	Jessie's Ekans is revealed to know Acid. James's Magikarp is revealed to know Splash. Ash, his friends, and Team Rocket escape from the sunken St. Anne. James's Magikarp evolves into Gyarados, learns Dragon Rage, and leaves him.
Island of the Giant Pokémon	Jessie and James reveal that Ekans and Koffing were given to them as chūgen (the Ghost Festival) and oseibo (Year-End gift giving) presents, respectively.
Beauty and the Beach	Misty and Brock meet Professor Oak in person and also Delia for the first time. Misty meets Gary for the first time.
Tentacool and Tentacruel	Misty catches a Horsea.
The Ghost of Maiden's Peak	James's Koffing is revealed to know Poison Gas.
Bye-Bye Butterfree	Ash and his friends are revealed to be headed for Saffron City for Ash's next Gym battle. Ash releases his Butterfree so it can breed with its mate.
Abra and the Psychic Pokémon	Ash and his friends reach Saffron City and meet Sabrina, the Saffron Gym Leader. Sabrina's Abra evolves into Kadabra. Ash's Pikachu is revealed to know Thunder. Ash battles Sabrina but loses by forfeit. Ash heads to Lavender Town to catch a Ghost Pokémon so he could be stronger against Sabrina's Kadabra.
The Tower of Terror	Ash and his friends arrive at Lavender Town. Ash's Charmander is revealed to know Leer. Ash befriends a Haunter, who agrees to follow him back to Saffron City.
Haunter versus Kadabra	Ash returns to Saffron City to battle Sabrina again. Haunter disappears before the rematch, forcing Ash to forfeit again. Ash finds Haunter, but it disappears again when Ash tries to challenge Sabrina once more. Pikachu battles Sabrina's Kadabra to protect Ash. Ash earns the Marsh Badge due to Haunter making Sabrina and Kadabra laugh, thus making the latter unable to battle. Haunter leaves Ash to stay with Sabrina. Ash learns that the next Gym is located in Celadon City and decides to head there.
Primeape Goes Bananas	Gary and the other two Pallet Town Trainers are revealed to have won five Badges each, including the Celadon Gym Badge. Ash tries and fails to catch a Mankey. The Mankey that Ash tried to catch evolves into a Primeape. Ash's Bulbasaur is revealed to know Razor Leaf. Ash's Charmander learns Rage. Ash catches the newly evolved Primeape. Ash and his friends reach Celadon City.
Pokémon Scent-sation	Ash and his friends meet Erika, the Celadon City Gym Leader. Ash challenges Erika to a Gym battle, but it gets disrupted by a Team Rocket-caused fire. Ash's Charmander is revealed to know Skull Bash. Ash earns the Rainbow Badge from Erika as a thanks for saving her Gloom from the fire.
Hypno's Naptime	Misty accidentally catches a Psyduck.
Pokémon Fashion Flash	Ash and his friends meet Suzie, a Pokémon Breeder. Brock's Geodude is revealed to know Seismic Toss. Brock receives a Vulpix from Suzie.
The Punchy Pokémon	Ash's Primeape begins to obey him. Primeape is revealed to know Scratch, Mega Kick, and Seismic Toss. Ash wins the P1 Grand Prix with Primeape. Ash leaves his Primeape with Anthony for training.
Sparks Fly for Magnemite	Ash catches a Muk, but sends it to Professor Oak's Laboratory due to its nasty smell.
Dig Those Diglett	Ash learns that the next Gym is the Fuchsia Gym. Misty and Brock meet Gary for the first time (dub only). Jessie's Ekans evolves into Arbok. James's Koffing evolves into Weezing.
The Ninja Poké-Showdown	Ash and his friends arrive at the Fuchsia Gym and meet the Gym Leader Koga, and his sister, Aya. Ash's Bulbasaur is revealed to know Leech Seed. Ash challenges Koga to a Gym battle, but the battle is interrupted by Team Rocket. Misty's Psyduck battles for the first time and is revealed to know Tail Whip, Scratch, Disable, and Confusion. Ash's Charmander is revealed to know Ember and Fire Spin. Ash continues his battle with Koga and wins, earning a Soul Badge.
The Flame Pokémon-athon	Jessie's Arbok is revealed to know Poison Sting and Glare.
The Kangaskhan Kid	Jessie tries and fails to catch a Kangaskhan. Ash's Squirtle is revealed to know Skull Bash.
EP035	Ash and his friends enter the Safari Zone and receive thirty Safari Balls from Kaiser to be used within the Zone. Ash uses his Safari Balls to catch thirty Tauros, all of which he subsequently sends to Professor Oak's Laboratory. Ash also tries to catch a Rhyhorn, but the Safari Ball hits a bypassing Tauros, catching it instead.
The Bridge Bike Gang	Jessie and James are revealed to have been members of a bicycle gang in the past. Misty's Psyduck is revealed to be able to use Confusion and Disable only when its headache is severe enough.
Ditto's Mysterious Mansion	Ash and his friends meet Duplica, a Ditto Trainer.
EP038	Jessie takes a prototype Porygon from Dr. Akihabara, but later accidentally leaves it.
Pikachu's Good-Bye	Ash attempts to release Pikachu, but Pikachu returns to him.
Holiday Hi-Jynx	Ash attempts to catch a Jynx, but fails since she belongs to another Trainer.
The Battling Eevee Brothers	Misty's Psyduck is revealed to know Water Gun, although it is not perfected.
Wake Up Snorlax!	Ash tries to catch a Snorlax, but fails due to it already having a Trainer.
The March of the Exeggutor Squad	Ash's Charmander evolves into a Charmeleon.
The Problem with Paras	Ash's Charmeleon starts disobeying him.
The Song of Jigglypuff	Misty tries to catch a Jigglypuff, but decides against it upon finding out that it can't Sing. Misty's Staryu is revealed to know Double-Edge. The Jigglypuff that Ash and his friends help out in this episode begins to follow them around.
Attack of the Prehistoric Pokémon	Ash and his friends encounter Gary again. Jessie and James both attempt and fail to catch a Kabutops. Ash's Charmeleon evolves into Charizard, but remains disobedient. Ash finds a Pokémon Egg, and Brock decides to be in charge of taking care of it.
Holy Matrimony!	James's childhood is revealed: James is revealed to come from a rich family. James is revealed to be engaged to a girl named Jessebelle. James is revealed to own a Growlithe, nicknamed Growlie.
Who Gets to Keep Togepi?	Ash receives a Pokédex upgrade from Professor Oak. Ash and his friends decide to head to the Gym on Cinnabar Island. Brock's Geodude is revealed to know Tackle. The Egg Ash found a while back hatches into a Togepi. Ash, Misty, Brock, and Meowth decide to have a tournament to see who will keep Togepi. Brock's Onix is revealed to know Rock Throw. Ash wins the tournament, but Togepi chooses to go with Misty instead.
Bulbasaur's Mysterious Garden	Ash's Bulbasaur begins to evolve, but decides not to. Ash's Bulbasaur learns Solar Beam.
Princess Versus Princess	Jessie catches a Lickitung. Misty and Jessie enter the Queen of the Princess Festival, with Misty being the winner.
The Purr-fect Hero	Misty's Horsea is revealed to know Bubble.
Pokémon Paparazzi	Ash and his friends meet photographer Todd Snap, who joins the group.
The Breeding Center Secret	Ash and his friends encounter Butch and Cassidy, two other members of Team Rocket, for the first time. James is revealed to have caught a Weepinbell that has now evolved into a Victreebel. Todd Snap leaves the group.
Riddle Me This	Ash and his friends reach Cinnabar Island, meeting Gary again along the way. Ash and his friends meet Blaine, the Cinnabar Gym Leader. Ash begins his Gym battle with Blaine.
Volcanic Panic	Ash forfeits his Gym battle with Blaine. Ash's Charizard is revealed to know Submission and Seismic Toss. Ash defeats Blaine in a rematch and earns the Volcano Badge. Ash learns that there is a Gym in Viridian City, and decides to head back there.
Beach Blank-Out Blastoise	Ash and his friends leave Cinnabar Island and head to Viridian City for Ash's final Gym battle.
The Misty Mermaid	Ash and his friends visit Cerulean City again. Misty's Horsea is revealed to know Smokescreen. Ash's Squirtle is revealed to know Tackle. Misty's sisters' Seel evolves into Dewgong. Misty leaves her Horsea and Starmie at the Cerulean Gym.
Clefairy Tales	Ash and his friends encounter a group of extraterrestrial Clefairy. Jigglypuff is revealed to know Pound.
The Battle of the Badge	Ash and his friends return to Viridian City and encounter Gary again. Gary is revealed to have won ten Badges and obtained a Nidoking and an Arcanine. Gary challenges the Viridian Gym Leader and loses to a mysterious Pokémon. Jessie, James, and Meowth present Misty's Togepi to Giovanni as a gift, but he rejects it. Jessie, James, and Meowth are temporarily appointed as the Gym Leaders of the Viridian Gym. Gary meets Team Rocket for the first time. Ash's Pidgeotto is revealed to know Double-Edge. Ash earns his eighth and final Badge, the Earth Badge, after defeating Team Rocket, qualifying him for the Pokémon League. The Viridian Gym collapses. Ash and his friends head back to Pallet Town.
It's Mr. Mime Time	Ash and his friends return to Pallet Town. Misty and Brock meet Delia for the first time (dub only). Delia obtains a Mr. Mime, which she nicknames Mimey and shares with Ash.
Showdown at the Po-ké Corral	Mewtwo leaves Giovanni and destroys his headquarters. Ash and his friends meet Gary again at Professor Oak's Laboratory. Professor Oak reveals that the two other Trainers who left Pallet Town with Ash and Gary did not succeed as Trainers. Ash, his friends, and Gary learn that the Pokémon League will be held at Indigo Plateau in two months. It is revealed in the dub that Ash has caught 30 Tauros at the Safari Zone. Gary is revealed to have obtained a Doduo and own more than 200 Pokémon from up to 60 different species. Gary challenges Ash to a battle, but they are interrupted by the appearance of Team Rocket before they can begin. Professor Oak encounters Team Rocket for the first time.
Mewtwo Strikes Back	Ash's Squirtle is revealed to know Bubble Beam. Ash, Misty, and Brock meet Mewtwo and Mew, but Mewtwo later makes them forget about the encounter. Ash sees Mew again, but does not recognize it since his memory has been erased.
The Evolution Solution	Jessie catches a Shellder that James wanted to catch, but it attaches itself to Professor Westwood V's Slowpoke, catalyzing its evolution into a Slowbro and thus leaving her.
Make Room for Gloom	Jessie's Arbok is revealed to know Toxic.
Go West Young Meowth	Meowth recalls how he learned to speak the human language and walk upright on his hind legs. Meowth reveals why he joined Team Rocket.
To Master the Onixpected	Ash and his friends meet Bruno, a member of the Kanto Elite Four. Bruno catches a giant Onix.
The Ancient Puzzle of Pokémopolis	Brock's Vulpix is revealed to know Quick Attack.*
Bad to the Bone	Ash and his friends set off for Indigo Plateau, the venue for the Indigo Plateau Conference. Jessie's Arbok is revealed to know Double-Edge.
All Fired Up	Ash, his friends, and Gary arrive at Indigo Plateau. Ash, Misty, and Brock help carry the flame of Moltres to the League stadium. Ash sees the legendary bird, Moltres. The Indigo Plateau Conference begins.
Round One - Begin!	Gary wins his first round match. Ash uses his Krabby in battle for the first time. Ash's Krabby is revealed to know Harden, Vise Grip, Leer, and Stomp. Ash's Krabby evolves into Kingler. Ash's Kingler is revealed to know Bubble, Water Gun, and Crabhammer. Ash's Kingler learns Hyper Beam. Ash wins his first round match against Mandi using only his Kingler.
Fire and Ice	Ash's Squirtle is revealed to know Withdraw. Ash wins his second and third round matches against an unnamed Trainer and Pete Pebbleman, respectively.
The Fourth Round Rumble	Gary is revealed to have made it to the fourth round. Gary loses his fourth round battle against Melissa, placing him in the Top 32. Gary heads back to Pallet Town. Ash uses his Muk in battle for the first time. Ash's Muk is revealed to know Body Slam. Ash wins his fourth and final preliminary round match against Jeanette Fisher and advances to the fifth round, securing him a place in the Indigo Stadium.
A Friend In Deed	Ash and his friends meet Ritchie. Ash learns he will be battling Ritchie in the fifth round.
Friend and Foe Alike	Ash's Pikachu is revealed to know Double-Edge. Ash battles Ritchie in the fifth round and loses, finishing in the Top 16.
Friends to the End	Ritchie is revealed to own either a Spearow or a Tentacool. Ritchie loses his sixth round Full Battle against Assunta, placing him in the Top 8. The Indigo Plateau Conference ends. Ritchie leaves the group. Ash and his friends head back to Pallet Town.

Orange Islands

Episode	Details
Pallet Party Panic	Ash is given an errand by Professor Oak to travel to the Orange Archipelago and retrieve a mysterious Poké Ball from Professor Ivy on Valencia Island. Gary is revealed to have left Pallet Town for a new Pokémon journey. The Spearow from the first episode returns as a Fearow, which Ash unsuccessfully attempts to catch. Ash's Pidgeotto evolves into a Pidgeot. Ash releases his Pidgeot to protect other Pidgey and Pidgeotto from the Spearow and Fearow flock.
A Scare in the Air	Ash, his friends, and Team Rocket leave Kanto and travel to the Orange Archipelago, arriving on Valencia Island.
Poké Ball Peril	Ash and his friends meet Professor Ivy. Ash receives the GS Ball from Professor Ivy. Brock decides to become Professor Ivy's assistant and leaves the group. Ash and Misty head back to Pallet Town, but are caught in one of Team Rocket's traps and left alone aboard a pilotless blimp.
The Lost Lapras	Ash and Misty crash-land on Tangelo Island. Ash and Misty meet Tracey Sketchit, who joins the group. Ash learns of the Orange League and decides to challenge it. Tracey encounters Jigglypuff and Team Rocket for the first time. Ash catches a Lapras.
Fit to be Tide	Ash and his friends reach Mikan Island, the site of the first Orange League Gym, and meet Cissy, the Mikan Gym Leader. Ash learns that the Orange League's Gyms test a Trainer's skill through challenges rather than normal battles and thus operate differently from the usual Gyms. Ash's Lapras is revealed to know Ice Beam. Ash defeats Cissy and earns his first Orange League Badge, the Coral-Eye Badge.
Pikachu Re-Volts	Tracey meets Butch and Cassidy for the first time. Butch and Cassidy are revealed to have stolen a Drowzee from their fake Breeding Center. Jessie's Lickitung uses Tackle for the first time. James's Victreebel is revealed to know Tackle. Misty's Togepi is revealed to know Metronome.
The Crystal Onix	Tracey is revealed to own a Marill.
In The Pink	Tracey's Marill is revealed to know Water Gun.*
Stage Fight!	Tracey's Marill uses Water Gun for the first time.
Bye Bye Psyduck	Misty's Goldeen is seen battling for the first time and is revealed to know Agility and Horn Attack.
The Joy of Pokémon	Ash learns that the next Orange League Gym is located on Navel Island, and decides to head there.
Navel Maneuvers	Ash and his friends arrive on Navel Island and meet Danny, the Navel Gym Leader. Ash beats Danny and earns the Sea Ruby Badge.
Snack Attack!	Jessie's Lickitung is revealed to know Wrap. Ash catches a Snorlax.
A Shipful of Shivers	Ash learns that he needs four Badges in order to enter the Orange League. Ash and his friends learn about the history of the Orange League. James's Victreebel is revealed to know Razor Leaf. Jessie's Arbok is revealed to know Tackle.
Meowth Rules!	Meowth reveals that he's unable to learn Pay Day due to having spent too much energy on learning how to talk.
Tracey Gets Bugged	Ash attempts to catch a Scyther. Tracey's Venonat is revealed to know Sleep Powder. Tracey catches the Scyther that Ash tried to catch.
A Way Off Day Off	James's Victreebel is revealed to know Sleep Powder. Tracey's Scyther is revealed to know Skull Bash.
The Mandarin Island Miss Match	Ash and his friends meet Prima of the Kanto Elite Four. Ash battles Prima, but is defeated. Ash learns from Prima that there is an Orange League Gym on Trovita Island, and decides to head there.
The Mystery Menace	Ash temporarily adds his Muk to his team from Professor Oak's Laboratory.
Misty Meets Her Match!	Ash and his friends reach Trovita Island and meet Rudy, the Trovita Gym Leader. Ash's Bulbasaur is revealed to know Sleep Powder. Ash's Squirtle learns Hydro Pump. Ash defeats Rudy and earns the Spike Shell Badge.
Bound For Trouble	Ash's Snorlax is revealed to know Mega Punch.
The Power of One	Tracey meets Professor Oak in person for the first time, and also meets Delia for the first time.
Charizard Chills	Ash's Charizard is revealed to know Mega Punch and Take Down. Charizard begins to obey Ash. Charizard learns Dragon Rage.
The Pokémon Water War	Ash and his friends meet Captain Aidan and Team Wartortle. Tracey's Venonat is revealed to know Tackle.
Pokémon Food Fight	Ash's Snorlax learns Hyper Beam.
Pokémon Double Trouble	Ash and his friends arrive on Kumquat Island and meet Luana, the Kumquat Gym Leader and the final member of the Orange Crew. Ash's Charizard is revealed to know Tackle. Ash learns about Double Battles and has his first official battle of that kind. Ash defeats Luana and earns the Jade Star Badge, his fourth and final Orange League Badge, allowing him to challenge the Orange Crew Supreme Gym Leader.
The Stun Spore Detour	Misty's Goldeen is revealed to know Fury Attack. Misty catches a Poliwag.
Hello Pummelo	Ash and his friends arrive on Pummelo Island, the final site of the Orange League. Ash's Lapras is revealed to know Water Gun. Ash sends his Snorlax to Professor Oak's Laboratory in exchange for one of his Tauros. Ash begins his first-ever Full Battle with Drake, the Orange Crew Supreme Gym Leader. Ash uses one of his Tauros in battle for the first time. Ash's Tauros is revealed to know Fissure.
Enter The Dragonite	Ash's Tauros is revealed to know Take Down. Ash wins his Full Battle against the Orange Crew Supreme Gym Leader Drake. Ash becomes a Champion of the Orange League, earning the Winner's Trophy and a spot in the Palace of Victory.
Viva Las Lapras	Ash's Lapras is reunited with its family. Misty's Goldeen is revealed to know Water Gun. Ash releases Lapras.
The Underground Round Up	Ash and his friends leave the Orange Archipelago, bound for Pallet Town.
A Tent Situation	Ash and his friends arrive in Pallet Town. Brock is revealed to have left Professor Ivy and returned to Pallet Town. Brock meets Tracey for the first time. Ash delivers the GS Ball to Professor Oak. Ash returns Tauros to its herd at Professor Oak's Laboratory. James's Victreebel is revealed to know Double-Edge*. Gary returns and is revealed to have obtained a Nidoqueen. Tracey meets Gary for the first time. Ash challenges Gary to a battle, and he accepts.
The Rivalry Revival	Gary is revealed to have obtained an Eevee. Ash has his first-ever battle against Gary and loses. Professor Oak studies the GS Ball, but fails to uncover its secrets. Ash and his friends learn about the Johto region. Gary leaves for the Johto region. Ash decides to challenge the Johto League. Brock rejoins the group and says he'll travel to Johto with Ash and Misty. Professor Oak gives the GS Ball back to Ash and asks him to take it to Poké Ball designer Kurt in Azalea Town. Ash receives a new Pokédex from Professor Oak. Tracey decides to stay in Pallet Town and become Professor Oak's assistant. Mimey is revealed to know Light Screen. Ash, Misty, and Brock head off to New Bark Town in the Johto region.

Johto

Episode	Details
Don't Touch That 'Dile	Ash and his friends see a Suicune. Ash and his friends arrive at New Bark Town and meet Professor Elm. James's Victreebel is revealed to know Vine Whip. Ash signs up for the Johto League. Ash learns that the first Johto League Gym is in Violet City and decides to head there.
The Double Trouble Header	Ash and his friends meet Casey, a rookie Trainer. Casey catches a Rattata. Ash's Pikachu is revealed to know Tackle.
A Sappy Ending	Ash catches a Heracross.
Roll On, Pokémon!	Ash and Brock attempt to catch a Donphan, but stop upon finding out it already has an owner. Ash's Heracross is revealed to know Tackle, Horn Attack, and Endure. Misty's Poliwag is revealed to know Bubble. James's Victreebel is revealed to know Wrap.
Illusion Confusion!	Ash and his friends meet up with Gary.
Flower Power	James's Victreebel is revealed to know Swords Dance and Take Down and uses Wrap for the first time.
Snubbull Snobbery	A Snubbull starts following Team Rocket.
The Chikorita Rescue	Ash catches a Chikorita.
Once in a Blue Moon	Ash and his friends arrive in Cherrygrove City. Misty tries to catch a Quagsire twice, but is stopped both times.
The Whistle Stop	Jessie's Lickitung is revealed to know Supersonic and Stomp.
Ignorance is Blissey	Jessie is revealed to have studied at Pokémon Nurse School. Jessie's Lickitung is revealed to know Slam.
A Bout With Sprout	Ash and his friends arrive in Violet City.
Fighting Flyer with Fire!	Ash and his friends arrive at the Violet Gym meet Falkner, the Violet City Gym Leader. Ash defeats Falkner in a Gym battle and earns his first Johto League Badge, the Zephyr Badge.
For Crying Out Loud	Ash learns that the next Gym is located in Azalea Town, and decides to head there. Misty attempts to capture a Marill, but fails due to her already being owned.
Charizard's Burning Ambitions	Ash leaves his Charizard to train at the Charicific Valley.
Chikorita's Big Upset	Ash's Chikorita is revealed to know Tackle. Chikorita's jealousy towards Pikachu is confirmed.
Wired for Battle!	Ash's Heracross is revealed to know Leer, Take Down, and Fury Attack.
Good 'Quil Hunting	Ash catches a Cyndaquil.
A Shadow of a Drought	Ash and his friends arrive in Azalea Town and meet Kurt.
Goin' Apricorn	Ash, Misty, and Brock each receive a Fast Ball from Kurt. Brock uses his Fast Ball to catch a Pineco. Ash and his friends obtain two Blue Apricorns and a Black Apricorn and give them to Kurt to be turned into special Poké Balls. Ash leaves the GS Ball with Kurt.
Gettin' The Bugs Out	Ash and his friends arrive at the Azalea Gym and meet the local Gym Leader, Bugsy. Ash's Chikorita is revealed to know Sweet Scent. Ash defeats Bugsy in a Gym battle and earns the Hive Badge. Ash and Misty both receive a Lure Ball and Brock receives a Heavy Ball from Kurt. Ash and his friends leave Azalea Town.
A Farfetch'd Tale	Ash learns that there is a Gym in Goldenrod City.
Tricks of the Trade	Ash sends his Heracross to Professor Oak's lab in exchange for one of his Tauros. James meets the Magikarp salesman again. Jessie accidentally trades her Lickitung for Benny's Wobbuffet.
The Fire-ring Squad	Ash sends Tauros back to Professor Oak's Laboratory and agrees to let Heracross stay there as well. Team Wartortle and the Squirtle Squad make a reappearance. Brock meets Captain Aidan for the first time. Ash's Squirtle rejoins the Squirtle Squad.
Hour of the Houndour	Ash's Pikachu is revealed to know Leer.
The Totodile Duel	Both Ash and Misty throw their Lure Balls simultaneously at a wild Totodile, but only one catches it. Brock referees a match to determine who will get the Pokémon. Misty uses her Togepi in a battle for the first time. Misty's Togepi is revealed to know Charm. Misty's Poliwag evolves into Poliwhirl and learns Body Slam. Ash wins the match and receives Totodile.
Hot Matches!	Ash's Cyndaquil learns to ignite the flame on its back at will. Ash's Cyndaquil is revealed to know Agility and Smokescreen.
Fowl Play!	Ash catches a Shiny Noctowl.
Forest Grumps	James's Victreebel uses Vine Whip for the first time.
Pikachu & Pichu	Ash and his friends celebrate the first-year anniversary of Ash's Pokémon journey.
Spell of the Unown: Entei	Brock's Zubat is revealed to know Wing Attack. Misty's Staryu is revealed to know Rapid Spin. Ash's Charizard briefly returns from the Charicific Valley.
The Fortune Hunters	Butch and Cassidy appear again. Butch is revealed to own a Primeape. James's Victreebel is revealed to know Stun Spore.
A Goldenrod Opportunity	Ash and his friends arrive at Goldenrod City and meet the local Gym Leader, Whitney. Ash has a Gym battle with Whitney and loses.
A Dairy Tale Ending	Ash has a rematch with Whitney and wins, earning the Plain Badge.
Air Time!	Ash and his friends meet DJ Mary. The group heads out to Ecruteak City.
The Bug Stops Here	Ash and his friends encounter Casey again. Ash, Casey, and Team Rocket enter a Bug-Catching Contest. Ash fails to catch a Weedle for the second time as it's caught by Casey instead. She is later forced to release it under the contest rules. Casey's Chikorita evolves into a Bayleef. Ash catches a Beedrill and wins the Bug-Catching Contest, earning him a Sun Stone. Ash gives his Beedrill to Casey.
Carrying On!	Ash's Noctowl is revealed to know Whirlwind.
Hassle in the Castle	Brock's Zubat evolves into Golbat.
A Hot Water Battle	Jessie's Wobbuffet is revealed to know Bide.
Hook, Line, and Stinker	Ash and Misty each catch a Seaking as part of the Seaking Catching Competition, but under contest rules do not keep them. Misty's Poliwhirl is revealed to know Mega Punch. Misty wins the Seaking Catching Competition.
Beauty and the Breeder	Ash and his friends meet up with Suzie again. Brock returns Vulpix to Suzie. Brock and Suzie enter the Pokémon Beauty Contest, but it is not revealed whether they win or lose.
Power Play	Ash and his friends meet up with Gary again. Gary's Eevee is revealed to have evolved into an Umbreon.
Imitation Confrontation	Duplica returns with a new Ditto named Mini-Dit. Ash's Totodile is revealed to know Scary Face and Tackle via Mini-Dit's Transform. Jessie's Wobbuffet is revealed to know Mirror Coat via Mini-Dit's Transform.
Trouble With Snubbull	The Snubbull that has been following Team Rocket around evolves into Granbull. Granbull returns to her owner, Madame Muchmoney.
Ariados, Amigos	Ash and his friends meet up with Aya again. Brock's Pineco is revealed to know Spikes.
Wings 'N' Things	Misty's Poliwhirl is revealed to know Tackle.
The Grass Route	Ash and James enter the Grass Tournament but lose to Ephraim. Ash's Bulbasaur is revealed to know Take Down.
Delibird's Dilemma	Ash's Noctowl is revealed to know Foresight.
Mewtwo Returns	Ash, his friends, and Team Rocket encounter Mewtwo again. Ash, Misty, and Brock meet Giovanni for the first time. Mewtwo erases its encounter with Giovanni, his underlings, Domino, Luna, and Cullen from their memories.
A Ghost of a Chance	Ash, Misty, and Brock arrive in Ecruteak City and meet Morty, the Ecruteak Gym Leader. James obtains an Itemfinder. Ash's Noctowl is revealed to know Tackle. Ash finds out that the mysterious Pokémon he saw on his first day as a Pokémon Trainer was Ho-Oh.
From Ghost to Ghost	Ash's Cyndaquil is revealed to know Quick Attack and Swift. Ash's Noctowl learns Confusion. Ash defeats Morty in a Gym battle and earns the Fog Badge.
Trouble's Brewing	Ash and his friends meet the Kimono Sisters, and Misty strikes up a friendship with Sakura, the youngest sister. Jessie's Arbok is revealed to know Headbutt. Sakura considers joining Ash and company, but eventually decides not to. Ash and his friends decide to travel to Olivine City.
The Light Fantastic	Misty attempts to catch a Remoraid, but fails.
Moving Pictures	Ash and his friends meet up with Todd Snap, who is looking to get a photo of Articuno. Ash uses his Sun Stone to evolve a wild Sunkern into Sunflora. Todd joins the group again.
Freeze Frame	Todd gets a photo of Articuno, and later parts ways with Ash and his friends. Jessie's Wobbuffet is commanded to use Mirror Coat for the first time.
The Ring Masters	Ash temporarily sends Noctowl to Professor Oak's Laboratory in exchange for his Snorlax. Ash participates in a Pokémon Sumo Competition and wins, earning a King's Rock as a reward.
Control Freak	Brock's Geodude is revealed to know Dig. Brock's Golbat evolves into Crobat.
Current Events!	Ash's Chikorita evolves into Bayleef.
Turning Over A New Bayleef	Ash's Bayleef learns Body Slam.
The Kecleon Caper	Misty's Poliwhirl is revealed to know Headbutt.
Celebi: The Voice of the Forest	Professor Oak is revealed to have owned a Charmeleon.
Fight for the Light	Ash and his friends arrive in Olivine City and meet Jasmine, the Olivine Gym Leader. Ash tries to challenge Jasmine to a Gym battle, but she refuses, as she needs to care for a sick Ampharos. The group decides to head for Cianwood City to pick up medicine for Ampharos, and Ash learns that there is a Gym there.
Machoke, Machoke Man	Ash and his friends arrive at Cianwood City. Ash and his friends pick up the medicine for Jasmine's Ampharos as agreed and send it back to Olivine City. Ash and his friends meet the local Gym Leader, Chuck. Ash defeats Chuck in a Gym battle and earns the Storm Badge. Ash and his friends head for the Whirl Islands.
Around the Whirlpool	Ash, Misty, and Brock start their journey through the Whirl Islands. The group sees the shadow of a mysterious Pokémon and meets up with Professor Elm. Professor Elm is revealed to own a Corsola. Ash and Misty learn about the Whirl Cup, and they both decide to compete in it. Misty decides to try and catch a Corsola.
Takin' It on the Chinchou	Misty tries to catch a Chinchou, but fails due to it already having a Trainer.
A Corsola Caper	Ash's Totodile is revealed to know Headbutt. Misty uses her Lure Ball to catch a Corsola.
Mantine Overboard!	Ash and his friends meet Luka.
Octillery The Outcast!	Ash and Misty enter the Whirl Cup and make it through the preliminaries.
Dueling Heroes	Ash sends Bayleef to Professor Oak's Laboratory in exchange for his Kingler. Ash defeats Christopher and advances to the second round. Misty defeats Harrison and advances to the second round. Ash and Misty learn that they are set to battle each other in the second round.
The Perfect Match	Misty defeats Ash in the second round and advances to the third round. Ash sends Kingler back to Professor Oak's Laboratory and returns Bayleef to his team. Misty is defeated by Trinity in the third round. Trinity is defeated by an unknown Trainer in the final round of the Whirl Cup.
The Mystery is History!	Ash and his friends meet up with Ritchie and Luka again. The group encounters a Lugia and its child, the latter of which is later captured by Team Rocket. Ritchie meets Butch and Cassidy for the first time. Butch is revealed to own a Hitmontop, while Cassidy is revealed to own a Houndour. Ritchie is revealed to have obtained a Pupitar nicknamed "Cruise".
A Parent Trapped!	Ritchie's Zippo is revealed to have evolved into a Charmeleon. Ash, his friends, and the parent Lugia are captured by Team Rocket.
A Promise is a Promise	Ash and his friends escape from Team Rocket and free the two Lugia. Ritchie leaves the group.
Throwing in the Noctowl!	Ash and his friends return to Olivine City.
Nerves of Steelix	Ash has a Gym battle with Jasmine and wins, earning the Mineral Badge. Ash decides to head to Mahogany Town via Ecruteak City for his next Gym battle.
Bulbasaur... the Ambassador!	Ash sends Bulbasaur to Professor Oak's Laboratory to act as a peacemaker between the Grass and Water Pokémon. Ash's Bulbasaur learns Dig. Ash and Bulbasaur agree that Bulbasaur should remain at Professor Oak's Laboratory.
Espeon Not Included!	Ash and his friends return to Ecruteak City on their way to Mahogany Town and meet Sakura and the other Kimono Sisters again. Sakura's Eevee is revealed to have evolved into an Espeon. Sakura leaves on her own journey, heading towards Violet City.
For Ho-Oh the Bells Toll	Ash and his friends meet up with Morty again and also meet Eusine for the first time. Ash learns the legend of Ho-Oh and the three Legendary beasts. Ash sees Suicune again. Ash and his friends leave Ecruteak City and head on to Mahogany Town.
Extreme Pokémon!	Ash meets up with Gary again, and they both enter an Extreme Pokémon Race. Ash wins the Extreme Pokémon Race. Ash receives an Egg from Mr. Shellby's Pokémon Day Care Center.
Hatching a Plan!	Ash's Egg hatches into a Phanpy.
Dues and Don'ts	Jessie and James renew their membership with Team Rocket. A Delibird sent from Team Rocket begins to follow Jessie and James. Ash's Phanpy is revealed to know Take Down.
Talkin' 'Bout an Evolution	Ash and his friends encounter the Red Gyarados at the Lake of Rage, which is a result of Team Rocket's latest scheme of forcing Pokémon to evolve. Ash and his friends meet Lance, the Pokémon League Champion.
Rage of Innocence	Ash and his friends meet Pryce. Lance catches the Red Gyarados. Team Rocket's scheme of forcing Pokémon to evolve is foiled.
As Cold as Pryce!	Ash and his friends arrive in Mahogany Town. Ash and his friends meet Pryce again and learn that he is the Mahogany Gym Leader. Ash has an unofficial battle with Pryce and loses. Ash and his friends help Pryce find his lost Piloswine. Pryce accepts Ash's request for a Gym battle.
Nice Pryce Baby	Ash has a Gym battle with Pryce and Pryce forfeits, earning Ash the Glacier Badge. Ash and his friends head to Blackthorn City for Ash's final Johto Gym battle.
Hocus Pokémon	Ash is transformed into a Pikachu.
As Clear As Crystal	Ash reverts to human form after his transformation.
Will the Real Oak Please Stand Up?	Professor Oak is revealed to have caught a Pidgey.
Wish Upon a Star Shape	Ash and his friends encounter Ken and Mary from the Pokémon Mystery Club. Ash and his friends re-encounter the group of extraterrestrial Clefairy.
Outrageous Fortunes	Misty's Poliwhirl uses Ash's King's Rock to evolve into Politoed and learns Swagger.
One Trick Phony!	Ash's Totodile uses Scary Face for the first time.
Beauty is Skin Deep	Ash and his friends reach Blackthorn City and meet Clair, the local Gym Leader. Ash challenges Clair to a Gym battle. Clair's Dratini evolves into Dragonair.
Fangs for Nothin'	Ash begins his Gym battle against Clair, but it is interrupted due to Team Rocket stealing the Dragon Fang. A Wynaut begins to follow Team Rocket.
Great Bowls of Fire	Ash's Charizard returns from the Charicific Valley. Ash and his friends help Clair to recover the stolen Dragon Fang from Team Rocket.
Better Eight Than Never	Ash temporarily returns his Snorlax to his team to help in his battle with Clair. Ash's Snorlax is revealed to have learned Ice Punch. Ash beats Clair in a rematch and earns the Rising Badge, qualifying him for the Johto League. Ash's Charizard returns to the Charicific Valley.
Why? Wynaut!	Ash learns that the Johto League Silver Conference will take place in Silver Town at the foot of Mt. Silver in three months. Ash and his friends head to New Bark Town in order for Ash to register for the Silver Conference.
Just Add Water	Ash's Totodile is revealed to know Slash. Misty's Goldeen is revealed to know Supersonic and Horn Drill. Misty's Psyduck is revealed to know Psychic.
Pokémon Heroes: Latios & Latias	Misty's Corsola is revealed to know Bubble Beam.
Lapras of Luxury	Ash is briefly reunited with his Lapras. Ash is asked to deliver a Pokémon Egg to Professor Elm. Brock's Crobat is revealed to know Sonic Boom. Ash's Lapras becomes the leader of its herd.
Hatch Me If You Can	Ash's Egg hatches into a Larvitar. Ash registers for the Silver Conference. Ash agrees to take Larvitar to Mt. Silver.
Entei at Your Own Risk	Ash's Phanpy is revealed to know Defense Curl. Brock's Onix is revealed to know Sandstorm. Brock's Pineco evolves into a Forretress. Ash and his friends see an Entei.
A Crowning Achievement	Brock's Forretress is revealed to know Rapid Spin.
Here's Lookin' at You, Elekid!	Ash and his friends meet up with Casey again. Casey's Bayleef is revealed to have evolved into a Meganium. James is forced to trade his Victreebel for Magikarp salesman's Weepinbell. James's Weepinbell evolves into a new Victreebel. Jessie blasts away James's new Victreebel. The Magikarp salesman releases his Victreebel. James's two Victreebel meet and fall in love. Casey catches an Elekid.
You're a Star, Larvitar!	Larvitar is revealed to know Bite and Dig. Jessie's Arbok is revealed to know Take Down.
Address Unown!	An Unown shows Ash and his friends Larvitar's memories. Larvitar finally gets over its shyness towards Brock and Misty.
Mother Of All Battles!	Ash and his friends arrive at Mt. Silver. Ash leaves Larvitar with its mother at Ranger Mason's preserve
Pop Goes The Sneasel!	Ash meets Harrison, his newest rival. Ash and his friends learn about the Hoenn region. Harrison catches a Sneasel.
A Claim to Flame!	Ash and his friends are revealed to have arrived in Silver Town. Ash defeats Salvador and two other Trainers in the screening rounds, qualifying for the Silver Conference. Gary and Harrison also clear the screening rounds and qualify for the conference. Ash and Gary help to deliver the Ho-Oh flame to the stadium to allow the conference to begin.
Love, Pokémon Style!	Ash has all of the Pokémon he has been keeping at Professor Oak's Laboratory sent to him for the Silver Conference. Ash's Kingler is injured in an accident and is unable to compete in the tournament. Ash's Squirtle returns to his team from the Squirtle Squad. Ash's Phanpy is revealed to know Earthquake. Ash defeats Macy in his first preliminary battle.
Tie One On!	Macy defeats Jackson in their preliminary battle. Jackson is revealed to own an Azumarill, a Shiny Magneton, a Poliwhirl, a Quagsire, and a Golduck. Macy is revealed to own a Starmie. Harrison is revealed to own a Miltank. Ash and Jackson's preliminary battle ends in a draw, meaning Ash has advanced to the Victory Tournament. Gary and Harrison also advance to the Victory Tournament. Ash learns that he will battle Gary in the first round of the Victory Tournament.
The Ties That Bind	Gary is revealed to have obtained a Magmar, an Alakazam, a Houndoom, a Pinsir, a Fearow, a Kingdra, and a Skarmory. Ash's Charizard returns from the Charicific Valley. Ash and Gary receive a Pokédex upgrade from Professor Oak. Harrison wins his first round Full Battle, advancing to the quarterfinals. Ash begins his first round Full Battle against Gary. Ash's Tauros is revealed to know Horn Attack. Ash's Heracross is revealed to know Megahorn. Gary's starter Pokémon is revealed to have been a Squirtle, which has since evolved into a Blastoise.
Can't Beat the Heat!	Ash's Muk is revealed to know Sludge Bomb. Gary is revealed to have obtained a Scizor and a Golem. Ash wins his Full Battle against Gary, marking his first victory over his rival and advancing him to the quarterfinals. Ash and Gary end their rivalry and become friends again, just as they were when they were little. Team Rocket plans to pay off their debts towards Delibird. Ash begins his Full Battle against Harrison in the quarterfinals. Harrison is revealed to own a Kecleon.
Playing with Fire!!	Ash and Harrison continue their Full Battle in the quarterfinals. Harrison is revealed to own a Hypno and a Steelix. Ash's Bayleef is revealed to know Headbutt.
Johto Photo Finish	Ash loses his quarterfinals Full Battle with Harrison, placing him in the Top 8. Ash sends Squirtle and Charizard back to the Squirtle Squad and the Charicific Valley, respectively. Harrison loses to Jon Dickson in the semifinals. Harrison tells Ash that he should go to Hoenn. Gary decides to become a Pokémon Researcher. Jon Dickson wins the Silver Conference. The Silver Conference ends. Ash, Harrison, and Gary head their separate ways. Harrison heads to Kanto to collect the region's Badges and compete in its League Conference. Gary heads back to Pallet Town. Ash, Misty, and Brock head back to Pallet Town via Viridian City.
Gotta Catch Ya Later!	Daisy, Violet, and Lily give their Cerulean Gym Leader status to Misty. Misty gets her bike back, now mended. Ash and his friends meet the Invincible Pokémon Brothers. Ash, Brock, and Misty go their separate ways. Ash returns to Pallet Town and briefly meets Gary as he leaves for a new journey. Ash sees Ho-Oh again. Ash leaves all of his Pokémon, except Pikachu, at Professor Oak's Laboratory. Ash changes his clothes and receives a new Pokédex from Professor Oak. Ash heads for Littleroot Town in Hoenn.
Hoenn Alone!	Ash continues his journey towards Hoenn. Pikachu becomes ill.

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• Timeline of events in the anime