Hydra

The Hydra was a giant serpent-like monster that appeared in the Disney film Hercules. It is based off the original Hydra, a monster that fought the original Hercules in the story.

In the Disney movie, The Hydra was a minion of Hades who was commanded to kill Hercules. In the epic battle, Hercules cuts off The Hydra's head by slicing at its throat from within.

The Hydra was not dead yet, and three more heads grew in its place. Hercules continued to cut off the heads in a vain attempt to kill The Hydra. Apparently, it was a jungle of heads, and Hercules seemed to be unable to kill it. Eventually, he came up with a plan, and tricked The Hydra to cause a landslide. The landslide crushed The Hydra, killing it permanently.

In Ultima, the Hydra has been resurrected by Maleficent in order to keep it loyal to Hades now that he is in the Organization's Inner Circle. Not only that, but the Hydra is now Baron Strucker's pet, seeing as Strucker is the leader of HYDRA and that is was inspired by the mythival Hydra of legend.