Deino

Deino is a /-type Pokemon based off of the powerful Lernaean Hydra from Greek mythology. Its evolutions involve growing more heads. It evolves into Zweilous at level 50, and later into Hydreigon at level 64.

Pokemon Black
"Its behavior is to bite everything. As far as food, it eats anything. It’s dangerous to approach carelessly."

Pokemon White
"Since it can’t see, it finds its way by tackling and biting its surroundings. It’s always covered in fresh bruises."

Ability
"Hustle: Damage from physical attacks is 1.5 times, but average accuracy is only 80%. "

Trivia

 * This Pokemon and its evolutions are the first of its type, Dark/Dragon.
 * It's name appears to be a pun of Dino the Dinosaur from the Flintstones. Dino was a quadrapedal dinosaur bearing a resemblance to a young diplodocus, which is what Deino resembles, hence the pun on the name