Jolteon is a dog-like Pokémon with a very short tail, surrounded by a fringe of spikes on its rear. It has four slender legs, each with a three-toed foot and a pink paw pad. It has large, pointed ears with black insides. Jolteon is covered in yellow fur, and has a white, spiky collar. It can make its fur sharp like needles; this is similar to Glaceon, which also has fur that can be made sharp. Jolteon has dark, fox-like, black eyes.
Jolteon can use the same attacks that Eevee can use, with the addition of the ability to wield electrical attacks, as well as Double Kick and Pin Missile. In order to gather power for electric attacks, it accumulates negative ions in the atmosphere, charges power when its mood changes, or amplifies the weak electric charge of its cells with the static electricity of its electrically-charged needle fur. As a fully evolved Pokémon, Jolteon can learn Hyper Beam and Giga Impact.
Jolteon are sensitive Pokémon and easily become sad or angry. Every time its mood changes, it charges power. If startled or angered, it can shoot out bristles that are sharp enough to pierce opponents. Every hair on its body starts to stand sharply on end if it becomes charged with electricity, and the negatively charged ions in its fur create a constant sparking noise. Its fur also stands on end if it is angry or startled.
Jolteon usually are found near power plants. Due to the need of a Thunderstone to evolve from Eevee, not many are found. However, because it's an Eeveelution, it can adapt almost anywhere.
This Pokémon was unavailable prior to Generation I.