BiographyGary's Umbreon first appeared as an Eevee where it battled Ash's Pikachu shortly after Ash won the Orange League. Eevee defeated Pikachu without too much effort.
When it next appeared, Eevee had evolved into Umbreon and was used to battle an Alakazam who it defeated without taking any damage. Ash wanted to challenge Gary and his Umbreon but Gary refused.
For some reason, Gary did not use Umbreon against Ash in the Silver League Conference.
Umbreon was one of Gary's favourite Pokemon and stayed with him through his journey in Sinnoh. It once battled Ash's Gligar in a brief practice battle shortly before Gary gave Ash a Razor Fang in order to get Gligar to evolve. Umbreon was also used when Gary encountered Team Galactic. Along with Gary's Electivire it challenged Saturn's Toxicroak but Toxicroak was too fast, even for Umbreon, and defeated Umbreon and Electivire.
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|Shadow Ball +||Ill-Will Hunting!|
|Psychic +||The Needs of the Three!|
|Sand-Attack +||Ill-Will Hunting!|
|Reflect||The Rivalry Revival|
|Hidden Power||Power Play!|
|Quick Attack||Power Play!|
|Skull Bash||The Rivalry Revival|
|Take Down||The Rivalry Revival|
|Double Team||The Rivalry Revival|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.
- Despite being a Dark type Pokemon, Gary's Umbreon has never been seen using any Dark type moves.