In the main series
Magnemite debuted in Sparks Fly for Magnemite. Ash and his friends were in Gringey City while the power went out. When they were looking around for the cause of the power outage, a lone Magnemite showed up and was attracted to Ash's Pikachu, who had a cold. When a group of Grimer and its Muk leader were chasing Ash and his friends, a group of Magnemite and Magneton helped fight them off.
In Get Along, Little Pokémon, Ash, Misty, and Tracey met a man named Ethan who used Magnemite to harness electrical energy from bolts of lightning during thunderstorms, with this energy being given to towns without power. Magnemite #6 evolved into a Magneton to save Ash and Pikachu from Team Rocket.
A Magnemite belonging to the Olivine City Gym Leader, Jasmine, debuted in Fight for the Light!, where it was riding on Jasmine's shoulder through the whole episode. It was later used in her Gym battle with Ash in Nerves of Steelix!; it battled Pikachu, who was able to defeat Magnemite with Quick Attack.
A Magnemite appeared in Watt's with Wattson?, under the ownership of Wattson. Much like Jasmine's Magnemite, this Magnemite battled Pikachu during Ash's Gym battle against Wattson. It was defeated when Pikachu became overpowered. Three wild Magnemite also appeared later on in the episode.
A Magnemite appeared in PK13, where it attacked Meowth and Wobbuffet with Thunder Wave, but it was quickly defeated by Wobbuffet's Counter.
An army of Magnemite and Magneton, led by a Magnezone, appeared in Giratina and the Sky Warrior, under the ownership of the main antagonist Zero. They were mainly used by Zero as a swarm to trap or capture targets. They were also able to contain people and Pokémon by linking together around them, preventing them from moving.
Brock temporarily trained a Magnemite belonging to the Pokémon Summer Academy in Camping It Up!. Unlike the rest of the group, Brock had no problems bonding with and educating his Pokémon.
A wild Magnemite appeared in Expedition to Onix Island! as a resident of a deserted island. It attacked Iris and Axew with an Electric attack.
Two Magnemite appeared in Team Plasma's Pokémon Power Plot!, Meowth, Colress and Team Rivalry!, and Ash and N: A Clash of Ideals!, both under the ownership of Team Plasma Grunts.
Clemont owns a Magnemite, which debuted in Clemont's Got a Secret!. It stays at the Lumiose Gym. Clemont's Magnemite was later used in Battling with a Clean Slate!, during a Gym battle against Alvin, who defeated Magnemite with his Vivillon.
A Magnemite appeared in Pikachu's Vacation as one of the Pokémon seen at the Pokémon Theme Park.
Two Magnemite appeared in Lights, Camera, Quack-tion, acting as lighting technicians for the film "Pokémon in Love".
Four Magnemite appeared in Pikachu Re-Volts, where they were among the Pokémon controlled by Cassidy and Butch at Mandarin Island North.
Multiple Magnemite appeared in The Power of One.
Multiple wild Magnemite appeared in Pikachu's Rescue Adventure.
Three Magnemite belonging to a group of Phony Pokémon interpreters appeared in The Poké Spokesman, where they were convinced by Simon to cease their attacks.
A group of Magnemite and a Magneton appeared as security guards in Current Events as they first attacked Team Rocket who sneaked into a power station guarded entirely by Pokémon. Ash saw the door had been opened by someone, and upon investigation, was also attacked by the Magnemite.
Several Magnemite were among the Electric Pokémon that were lured by the "Miracle Crystal" that Attila and Hun were using in The Legend of Thunder!.
Magnemite is one of the Electric-type Pokémon that was seen in the lake with crystal in As Clear As Crystal.
A Magnemite appeared in You Said A Mouthful!. It was one of the Pokémon inside Anthony's Pelipper's mouth.
Some Magnemite, their evolved form Magneton, a Steelix, and a Skarmory appeared in All Torkoal, No Play!, where they were picking on a Torkoal that had entered the Valley of Steel.
A Magnemite appeared in A Fan with a Plan!.
A Magnemite was partnered with two Team Rocket trainees in Training Daze.
A Magnemite appeared in the opening sequence of Lucario and the Mystery of Mew.
A Magnemite appeared in The Champ Twins!.
A group of Magnemite appeared in Steeling Peace of Mind! and Saving the World From Ruins!, where they were some of the Steel-type Pokémon on Iron Island that had gone crazy due to Team Galactic's actions.
Multiple Magnemite appeared in Cheers on Castaways Isle!.
A group of Magnemite appeared in Gone With the Windworks!, under the ownership of Benjamin. They served as guards for the Valley Windworks
A Magnemite belonging to Professor Kodama appeared in Sticking With Who You Know!.
A Magnemite appeared in Dawn of a Royal Day!, under the ownership of a Pokémon Coordinator competing in the Arrowroot Contest.
Multiple Magnemite appeared in Iris and the Rogue Dragonite!.
Two Magnemite appeared in Kalos, Where Dreams and Adventures Begin!, including one that was wearing a pink ribbon.
A Magnemite appeared in Summer of Discovery! on a Pokévision video icon.
A Magnemite appeared in A Campus Reunion!.
Multiple Magnemite appeared in The Future Is Now, Thanks to Determination!, where they were among the Electric-type Pokémon being controlled by Team Rocket.
A Magnemite appeared in Lights! Camera! Pika!, under the ownership of Frank. Frank used Magnemite alongside Swirlix and Heliolisk to provide the lighting whilst filming his movies.
Four Trainers' Magnemite appeared in A Shocking Grocery Run!.
A Trainer's Magnemite appeared in They Might Not Be Giants!.
A Trainer's Magnemite appeared in Crystal-Clear Sleuthing!.
A Magnemite appeared in I Choose You!, where it was among the Pokémon that were under the control of Marshadow.
Two Trainers' Magnemite appeared in Balloons, Brionne, and Belligerence!.
A Trainer's Magnemite appeared in Now You See Them, Now You Don't!.
A Trainer's Magnemite appeared in Getting a Jump on the Competition!.
Multiple Magnemite appeared in The Power of Us, with five under the ownership of different Trainers, one being wild, and the other two appearing during a flashback.
A Trainer's Magnemite appeared in Dummy, You Shrunk the Kids!.
Multiple Trainers' Magnemite appeared in SM090, where they joined the rest of Alola in showering Necrozma with light so it could return to its true form.
A Trainer's Magnemite appeared in SM092.
|| Ash's Pokédex
|| Magnemite, a Magnet Pokémon. Its means of floating through the air are not understood. This very mysterious Pokémon is of the Electric type.
| Original series entries continue below.
|| Ash's Pokédex
|| Magnemite, the Magnet Pokémon. It's able to float through the air and emits Thunder Wave through its magnet-shaped units located on its sides.
| This concludes the entries from the original series.
In the Pokémon Black 2 and White 2 Animated Trailer
Magnemite (left) in the animated trailer
A Magnemite appeared in the Pokémon Black Version 2 and Pokémon White Version 2 Animated Trailer, under the ownership of a Team Plasma Grunt. It surrounded Nate, Hugh, and Cheren aboard the Plasma Frigate.
In Pokémon Origins
A Magnemite appeared in File 3: Giovanni, where it wa seen imprisoned at the Rocket Hideout.
In Pokémon Generations
A Magnemite appeared in The Chase, under the ownership of an International Police SWAT team. It was used during the raid on the Viridian Gym, during which it destroyed a door lock.
A Magnemite made an appearance in The Lake of Rage, under the ownership of a Team Rocket Grunt. Along with Grimer, Raticate, Golbat, and Houndoom, it was defeated by Lance's Dragonite during Lance and Ethan's infiltration of the Team Rocket HQ.
A soldier's Magnemite appeared in The Redemption, during a fantasy of a story from the past. It was one of the many Pokémon fighting in the great war of Kalos 3,000 years previously.
In the Pokémon Adventures manga
Magnemite made their debut aboard the S.S. Anne in Danger: High Voltorb as many of the Pokémon ready to attack Red; however, it's not clear if they belong to Lt. Surge or to his Sailor. They appeared later in Buzz Off, Electabuzz!, searching the ship for Red.
A Magnemite under the ownership of a Team Rocket Grunt appeared in Holy Moltres where it was used to battle Blaine's Arcanine and Rapidash.
Lt. Surge used two Magnemite to act as chains to trap Red so he could attack him in Go for the Golbat.
In Lapras Lazily, a wild Magnemite appeared in the abandoned Power Plant in Blue's flashback of how he met Agatha. Later, in Electro Magneton, three wild Magnemite and a Magneton attacked Blue and Evan. After Blue's Machamp defeated the Magneton, the wild Magnemite escaped.
Lt. Surge used a Magnemite to get Morty's attention so he could help locate Gold and Silver in Hello, Lickitung.
Later, in Magnificent Magnemite, Lt. Surge used a Magnemite to fight Morty's Misdreavus, using electromagnetism to shield attacks as well as to fire Zap Cannon. The fight, however, ended in a draw due to Misdreavus using Destiny Bond.
Another Magnemite appeared in The Last Battle XIII as one of the Pokémon sent to help the fight in Ilex Forest.
Wattson's two Magnemite were first seen with his Electrike in Plugging Past Electrike I, battling Pokémon belonging to certain children.
Ty's Magnemite appeared in What Would You Do for a Whismur?, battling Team Magma at the Rusturf Tunnel.
The Battle Factory rented a Magnemite which was stolen by Guile Hideout in The Final Battle VII.
In Pangoro Poses a Problem, multiple Magnemite were among the Electric-type Pokémon that charged the Prism Tower during a blackout.
Multiple Magnemite appeared in a flashback in Flabébé Blooms.
A Trainer's Magnemite appeared in The Decision and the Tournament of Six.
In the Pokémon Pocket Monsters manga
Green caught a Magnemite before participating in the sports meet in Pokémon Sports Meet!!.
Giovanni sent out Magnemite in an attempt to battle Squirtle in Squirtle, the Crybaby Pokémon.
In the Pokémon Gold & Silver: The Golden Boys manga
Black owns a Magnemite in The Golden Boys manga.