Eevee in-game is a Normal type, one of eighteen elemental attributes that determine a Pokémon's strengths and weaknesses. According to the Pokémon video games, Eevee is a mammalian creature with brown fur, a bushy tail that has a cream-colored tip, and a furry collar that is also cream-colored.

Stantler is brown in color with gold antlers on its head.

Weedle is a small, insect-like Pokémon appearing as a brown caterpillar with large stingers on both its rear and head. Across Weedle's underside are small, pink nubs which it uses to move. On its head, Weedle has two beady, black eyes above a large, pink nose.

Slaking is a large, bulky, ape-like bipedal Pokémon. Most of its shaggy fur is brown, along with the semi-circle patterning under its eyes. Its face, chest, hands, and feet are lighter in color. Its brows are thick and jutting, and it has a large, pink snout.