Hydra

right|300px 
In Greek myths and legends, the Hydra was a vicious monster with multiple heads with one immortal and invincible to all weapons. When one head was decapitated, two more snake-heads would grow in its place. Heracles eventually defeated the Hydra, by having his nephew, Lolous burn each stump after he had cut it, before the heads reproduced, then tore off the immortal head with his bare hands, and buried it under a giant rock.
Category:Ultimate avatar
Category:Characters
Category:Canon