A Jolteon belonging to the Instructor at the Pokémon League entrance exam.
Jolteon was used by the Intructor to battle Ash who was using an Arbok which he has randomly choosen.
Jolteon was paralyzed by Arbok's Glare attack but Ash made a mistake when he attempted to use wrap on Jolteon with its spikey mane. Jolteon used Thunder on Arbok and Ash was forced to switch to Meowth.