Hydreigon

Hydreigon is the final evolution form of Deino and the evolution of Zweilous. It is a Dark/Dragon type. It now has a head on each of it's arms, creating a Hydra-like evolution stage. It also has three pairs of wings.

Trivia

 * Hydreigon evolves at the latest level than any other Pokemon, Level 64.
 * Hydreigon's name came from "Hydra", a greek mythological dragon with many heads, "Drei", the german word for the number 3, and "Dragon"
 * Hydreigon can't be found in the wild.
 * It appears to be a remake of Dragonite.
 * Hydreigon resembles a hydra.
 * Hydreigon seems to resemble Salamence because both of their two pre-evolutions have weaknesses, until their pre-evolutions evolve into them
 * Hydreigon's pre-evolutions are blind, until Zweilous evolves into Hydreigon.
 * Salamences's pre-evolutions are unable to fly, until Shelgon evolves into Salamence.