Rhydon is a large, gray, bipedal Pokémon with features similar to both dinosaurs and rhinoceroses. It has narrow, red eyes and two fangs in its upper jaw. On the tip of Rhydon's snout is a cream-colored horn, which is smaller on a female than a male. There are several other spikes and projections on its head: on top is a spike that curves forward, two triangular points resembling ears on the sides, a wide, wavy crest under each ear, and spiky ridges on each cheek. It has a cream-colored abdomen divided into strips by thin divots. A rocky plate on its chest slightly overlaps its abdomen. There is a row of spikes down its back and they have a long tail with thin, black stripes.
Rhydon is a physically powerful Pokémon. It is recorded as being able to topple buildings with a sweeping blow of its tail, and its horn is able to bore through solid rock and shatter diamonds. Its armor-like hide protects it from heat and physical blows. It is stated to be capable of passing unscathed through streams of magma and withstanding a direct blow from a cannonball without being harmed. However, because of this tough hide, it is insensitive. Despite its well-developed brain, it can be forgetful. Rhydon lives in rough terrain like in caves or on top of mountains.
Rhydon evolves from Rhyhorn and evolves into Rhyperior.
(For specifics on this Pokémon's evolution in the games, refer to Game data→Evolution data.)
In Riddle Me This, Blaine used a Rhydon during his Gym battle against Ash. It briefly battled Charizard, who then refused to battle. While normally tough against Electric attacks, Rhydon was defeated when Pikachu struck Rhydon's horn, which acted like a lightning rod. It reappeared in a flashback in Volcanic Panic.
In The Battle of the Badge, Giovanni loaned his Rhydon to Jessie, James, and Meowth while putting them in charge of the Viridian Gym. It was subsequently used in their battle against Ash, where it was defeated by Pidgeotto and then Pikachu.
In Bound For Trouble, a giant Rhydon was living on Fairchild Island. Its size was due to the excessive amount of available food on the island.
In Right On, Rhydon!, a Rhydon unique for its strength and its ability to know Surf was sought by Pietra, but she needed a surfing Pokémon to accomplish this task. Pietra eventually caught Rhydon after rescuing it from Team Rocket.
In Tag! We're It...!, a Scientist used a Rhydon during the Hearthome City Tag Battle Competition. Pikachu and Chimchar battled it and a Magmar belonging to an Ace Trainer. Rhydon had Lightning Rod, which left Pikachu's Electric attacks useless, but Pikachu was able to defeat Rhydon with Iron Tail.
In Bibarel Gnaws Best!, the head engineer used a Rhydon to drill out rocks for a bridge under construction, but it was attacked by a Bibarel. When Bibarel was cornered, Ash's Pikachu used Iron Tail to defeat Rhydon.
In Meloetta and the Undersea Temple!, a Team Rocket Grunt used a Rhydon and a Golem to capture Meloetta, but they were stopped by Ridley and his Golurk. Though the full battle wasn't shown onscreen, Rhydon was apparently defeated by Golurk.
In A Crackling Raid Battle!, Jessie pulled a Rhydon from the Rocket Prize Master and used it in a Raid Battle against Zapdos.
In The Pendant That Starts It All: Part One, a Rhydon appeared under the ownership of Zirc. It has since made several reappearances throughout Pokémon Horizons: The Series.
In Island of the Giant Pokémon, a mechanical Rhydon was a part of Pokémon Land.
Rhydon debuted in the banned episode EP035, where one was in the Safari Zone.
Rhydon made its English dub debut in Showdown at Dark City as one of the Kaz Gym's Pokémon.
In Showdown at the Po-ké Corral, a Rhydon was living at Professor Oak's Laboratory.
In Friends to the End, Assunta used a Rhydon to battle Ritchie's Zippo.
In In the Pink, multiple pink Rhydon appeared were living at Pinkan Island.
In Shell Shock!, an expedition crew led by Nurse Joy looking for Kabuto Fossils used two Rhydon.
In Misty Meets Her Match, a Rhydon was exercising at the Trovita Gym.
In The Power of One, a Rhydon sensed the disturbance caused by Lawrence III.
A Rhydon appeared in the Japanese credits of Pikachu's Rescue Adventure.
In The Rivalry Revival, multiple Rhydon were living at Professor Oak's Laboratory.
In Ring Masters, a Rhydon competed in Rikishii Town Sumo Conference.
A Rhydon appeared in Celebi: The Voice of the Forest.
A Rhydon appeared in Extreme Pokémon!, under the ownership of a participant in the Extreme Pokémon Race.
A Rhydon appeared in a flashback in Pop Goes The Sneasel.
In Johto Photo Finish, Jon Dickson's Rapidash defeated a Trainer's Rhydon to win the Silver Conference.
In Celebi and Joy!, a demolition crew used a Rhydon for a construction project.
In Beg, Burrow and Steal, a Rhydon lived in an underground paradise.
A Coordinator's Rhydon appeared in Mean With Envy.
A Trainer's Rhydon appeared in A Judgment Brawl and Choose It or Lose It!.
In Numero Uno Articuno, a Rhydon was living at the Battle Factory.
In Lucario and the Mystery of Mew, multiple Rhydon were part of the feuding armies that were eventually placated by Sir Aaron in the past.
In Harley Rides Again, a Coordinator's Rhydon competed in the Wisteria Town Pokémon Contest.
A Trainer's Rhydon appeared in The Ole' Berate and Switch!.
In Arrival of a Rival!, a Coordinator's Rhydon competed in the Jubilife City Contest.
In The Rise of Darkrai, a Rhydon was hit by Darkrai's Dark Void.
In Glory Blaze!, a Trainer's Rhydon competed in the Hearthome City Tag Battle Competition.
In I Choose You!, a Rhydon fell under the control of Marshadow.
A Rhydon attacked Dawn and Chloe in Nightfall? Nightmares!.
A Trainer's Rhydon appeared in Showdown at the Gates of Warp!.
A Rhydon appeared in This Could be the Start of Something Big!.
||Rhydon, the evolved form of Rhyhorn. It is known as the Drill Pokémon. Its large horn gives it formidable attack power.
In File 3: Giovanni, Giovanni used a Rhydon to battle against Red's Charizard and lost.
In File 4: Charizard, Blue's Rhydon battled Red's Lapras and lost.
In The Challenger, Blue used a Rhydon during his Indigo League battle against Agatha, where it went up against her Arbok and Gengar. It managed to defeat Arbok, but it is unclear if it won against Gengar as well, for the outcome of that battle was never shown onscreen. Whatever the case, Blue eventually managed to defeat Agatha, allowing him to progress to Lance's room.
Two soldiers' Rhydon appeared in The Redemption, during a fantasy of a story from the past. They were seen petrified after the ultimate weapon was used by AZ to end the great war of Kalos 3,000 years previously.
Pokémon: Twilight Wings
In Letter, a Rhydon was with Bea.
In Training, a Rhydon was in the Wild Area.
A Rhydon briefly appeared in GOTCHA!, under the ownership of Blue.
Ash & Pikachu
Similar to her anime counterpart, Pietra recently caught a Rhydon. It appeared in The Grand Rhydon Plan.
The Electric Tale of Pikachu
Gary has a Rhydon, which was sent out with his other Pokémon to battle the giant Slowpoke in Ash vs. Gary.
- Main article: Blue's Rhydon
Rhydon debuted in Raging Rhydon under the ownership of Koga. It was forced to evolve by its Trainer with a mysterious injection, being the first evolution shown in the manga due to Red's Poliwhirl and Blue's Charmander evolving off-panel at the time.
Later in Tauros the Tyrant, a Team Rocket Grunt used a Rhydon in an attempt to catch Green.
In A Tale of Ninetales, a wild Rhydon attacked two of Blue's fan girls.
A Rhydon appeared in Long Live the Nidoqueen!?, under the ownership of Giovanni. He used its Fissure to trap Red.
In How Do You Do, Sudowoodo?, Gold encounters a wild Rhydon during his race with Whitney. It was hunting down a Sudowoodo, and kidnapped Whitney when she interfered with her Miltank, breaking her arm in the process. Gold tells Sudowoodo to stand up for itself and, with assistance from his billiard cue, helps Sudowoodo defeat the Rhydon with a strong punch to the gut.
In Rock, Paper...Scizor, Blue catches a Rhydon outside the Viridian Gym. He uses him to defeat Chuck in Heckled by Hitmontop, as well as Orm in Don't Doubt Deoxys. Near the end of the FireRed and LeafGreen saga, Blue remarks on a footnote Giovanni included in his handbook: Rhydon possibly possessed a stronger form. This is a reference to Rhydon's new evolved form, Rhyperior, an evolution that succeeded in occurring thanks to Silver's knowledge of Pokémon trading, resulting in the same Rhydon, as Rhyperior, being on hand with him until being returned to Blue later on.
A Rhydon appeared in Deprogramming Porygon-Z, under the ownership of an Ace Trainer.
A Trainer's Rhydon appeared in Clobbering Claydol.
Pokémon Gold & Silver: The Golden Boys
A Rhydon appeared in Let's Aim For The Goal!.
A Trainer's Rhydon appeared in Let's Fight For The Future!!.
Pokémon Pocket Monsters
Giovanni has a Rhydon, which he used in his Gym battle against Red in Get The Last Badge!!.
A Rhydon appeared in The Ancient Pokémon Discovery!.
Giovanni's Rhydon was Satoshi's opponent for his final Gym battle in PZ09. It went up against his Charizard and was defeated.