Zweilous

Zweilous, known as ジヘッド (Jiheddo) in Japanese, is a dual-type Dark/Dragon Pokémon introduced in Generation V. It evolves from Deino starting at level 50 and evolves into Hydreigon starting at level 64. Zweilous is a quadrupedal, two-headed dragon-like Pokémon with a dark blue body and black fur covering its neck and back. It has muscular front legs with two claws on each foot, while its rear legs are less defined, each with two small, backward-pointing toes without claws. Zweilous possesses two thin wings on its back. The two heads of Zweilous are hostile to each other, constantly competing for food, leading to overeating. It is said that the head that eats the most becomes the leader. This Pokémon is known to be nomadic and will migrate once it has depleted the prey in an area. Zweilous has made several appearances in the anime, including in A Village Homecoming!, where it belonged to Iris's friend Shannon. Zweilous's design is possibly inspired by multi-headed dragons like the Yamata no Orochi and the Lernaean Hydra.