Zweilous is a dark-blue, four-legged Pokémon defined by its two heads, which don't get along at all. Black fur covers its necks and back, while its front legs are thick and muscular with two claws each. The hind legs are thinner, equipped with small backward-pointing toes instead. Both heads sport tufts of fur that stick up with rounded tips, and a pair of thin wings juts from its back, each split into two points. The fur gives way to fuchsia striped bands along its sides, and while Zweilous appears eyeless, whether it's actually blind remains a mystery.
The real appeal of Zweilous is its chaotic nature. Both heads are constantly eating and biting with relentless energy, and they absolutely hate each other. They're competitive to a fault—each one demands equal attention, or they'll start fighting out of pure jealousy. They have different tastes in food, which means mealtimes turn into a contest where each head tries to outeat the other to prove dominance. This constant rivalry means Zweilous regularly overeats and ends up covered in scars, even when there's no external threat. Weirdly, this self-inflicted struggle actually makes it stronger without needing any help.
Zweilous is nomadic, roaming from place to place once it's devoured all the local prey—and the two heads bicker constantly about which direction to go. It typically makes its home in caves.
Evolution
Zweilous evolves from Deino and into Hydreigon.
Content compiled by AnimeList.moe from publicly available sources.
