Staldra

Staldras are enemies from The Legend of Zelda: Skyward Sword. They three-headed dragons with skull-like faces. In order to defeat them, Link must cut off all three of their heads in one strike. If he fails to cut all of them at once, the decapitated heads will grow back.

Etymology
The name Staldra seems to be a portmanteau of the prefix "Stal-", skeletal creatures in the Legend of Zelda universe, and Hydra, a multiple-headed monster from Greek mythology.