Hydra is a multi-headed snake in Greek mythology. He is depicted as having 9 heads, but some say he can have as many as 100. Hydra has incalculatable levels of healing; meaning that if one of his heads is cut off or destroyed, two more shall grow in their place. He can also breathe strong fire and extremely dangerous poison. Simply inhaling a molecule of his poison is enough to kill an adult. He is the hidden sibling of Orthrus, Cerberus, and Chimera; he just hasn’t told them yet.