Eevee

Eevee, art by Ken Sugimori. Universal starter of Gen 1 era Mary Sues!

Eevee is an official Normal-type Pokémon introduced in Generation I. It is #133 in the National PokéDex.

It can be found on Miato's Route 3 and Route 4 and has eight evolution paths in the region of Miato - seven of them are official and one of them is exclusive to the Miato region.

Yes, they're wild and rather common. Suck on THAT, Trebek.

For more information on Eevee, see its Bulbapedia entry.

Evolutionary Data:
Eevee → Water Stone → Vaporeon

Evolutionary Data:
Eevee → Thunderstone → Jolteon

Evolutionary Data:
Eevee → Fire Stone → Flareon

Evolutionary Data:
Eevee → Level up with maximum happiness at daytime → Espeon

Evolutionary Data:
Eevee → Level up with maximum happiness at nightttime → Umbreon

Evolutionary Data:
Eevee → Level up at Tiger's Eye Grove → Leafeon

Evolutionary Data:
Eevee → Level up at Obsidian Ridge → Glaceon

Evolutionary Data:
Eevee → Evolution method undetermined yet → Colibreon