The inner fur surrounding its heads is fuchsia in color, and resembles collars. Its body is primarily dark blue, with black fur covering its necks and shoulders. Hydreigon is a three-headed, draconic Pokémon with six thin, black wings that each end in two points on its back. 3.3 Pocket Monsters XY: The Legend of the Pokémon Dragon King.It appears to be distantly related to the Paradox Pokémon Iron Jugulis. It evolves from Zweilous starting at level 64. Hydreigon ( Japanese: サザンドラ Sazandora) is a dual-type Dark/ Dragon pseudo-legendary Pokémon introduced in Generation V. Pokémon Brilliant Diamond and Shining Pearl.