In the main series
Major appearances
Jolteon debuted in The Battling Eevee Brothers, under the ownership of Sparky. It was targeted in one of Team Rocket's schemes.
Ash battled against a Jolteon during the Pokémon League Entrance Exam in The Ultimate Test.
In Get Along, Little Pokémon, Ethan used a Jolteon as a "sheep dog" of sorts. Whenever any of Ethan's Magnemite tried to escape, Jolteon would use Thunder Wave to lure them back.
A Jolteon appeared in Trouble's Brewing and Espeon, Not Included, under the ownership of Satsuki, one of the Kimono Sisters. It battled Pikachu and ultimately lost after being hit with Pikachu's Thunder attack.
Volkner used a Jolteon in The Eighth Wonder of the Sinnoh World! during his Gym battle with Ash. It was defeated by Infernape.
A Jolteon appeared in Team Eevee and the Pokémon Rescue Squad!, along with an Eevee and its other evolutions at the time, under the ownership of Virgil. It was used to handle some Cryogonal and power up a generator. It reappeared in a flashback in the next episode.
A Jolteon appeared in Eevee & Friends with an Eevee and its other evolutions, including the newly introduced Sylveon. It has an affectionate personality and tends to shock those it hugs.
A Jolteon appeared in Mystery on a Deserted Island!, where it evolved from one of three Eevee with a Thunder Stone found on the Deserted Island.
A wild Jolteon appeared in Turning Heads and Training Hard!, where it was summoned to help Ilima's Eevee perform Extreme Evoboost. It reappeared in the Poké Problem segment of the next episode, where it saw Ilima and Eevee off.
Minor appearances
A Jolteon appeared in Pikachu Re-Volts, where it was among the Pokémon controlled by Cassidy and Butch at Mandarin Island North, alongside a Vaporeon and Flareon.
A Jolteon appeared in the Japanese credits of Pikachu's Rescue Adventure.
A Jolteon appeared in As Clear As Crystal as one of the Pokémon affected by the crystal.
A Jolteon appeared in Gary's demonstration in Johto Photo Finish, where it evolved from an Eevee.
A Jolteon appeared in Brock's demonstration in A Bite to Remember, where it evolved from an Eevee.
Multiple Jolteon appeared in the opening sequence of Destiny Deoxys.
A Jolteon made a brief cameo appearance in the opening sequence of Giratina and the Sky Warrior together with an Eevee and the other six Eeveelutions at the time.
A Trainer's Jolteon appeared in a flashback in Flint Sparks the Fire!.
A Jolteon appeared in A Campus Reunion!.
A Jolteon appeared in a fantasy in Tag Team Battle Inspiration!, where Serena imagined what her Eevee could evolve into.
A Jolteon appeared in a flashback in Volcanion and the Mechanical Marvel.
A Trainer's Jolteon appeared in I Choose You!.
A Jolteon appeared in The Power of Us, where it was among the Pokémon that could be caught during the Pokémon Catch Race.
Pokédex entries
Episode
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Pokémon
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Source
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Entry
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BW102
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Jolteon
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Ash's Pokédex
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Jolteon, the Lightning Pokémon. Jolteon becomes enveloped in lightning when angered.
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In Pokémon Origins
Red's Jolteon debuted in File 2: Cubone, where it was first sent out to battle a Team Rocket Grunt's Koffing. It eventually defeated the Poison Gas Pokémon with a Thunderbolt, forcing the Grunts to retreat. It then made further appearances in File 3: Giovanni, where it battled Giovanni's Rhyhorn during Red's Gym battle; and File 4: Charizard, where it was used at the Indigo Plateau.
- Jolteon shares its category name with Electrike. They are both known as the Lightning Pokémon.
- Jolteon and Zapdos's Japanese names are almost exactly the same as each other's, with a final s being the only difference.
- Jolteon was designed by Motofumi Fujiwara.[1]
Origin
Its physical anatomy seems to be primarily based on a herding dog or possibly a fennec fox, with several traits of coyotes. It is also feline-like; its extremely high speed resembles that of a cheetah's. It may also be inspired by the raijū, a beast from Japanese mythology whose body is made of lightning, and may take the form of a cat.
Name origin
Jolteon is a combination of jolt and eon (an immeasurably long period of time, possibly referring to how long evolution takes naturally). Eon is a suffix all Eevee evolutions share and was Eevee's English prototype name.
Thunders is literally thunders (present tense of the verb to thunder).