Grace Balin (Orca)

Dr. Grace Balin, or better known as Orca, is a villainess in DC Comics and an enemy of Batman. She is a marine biologist who (after being paralyzed) experimented with the idea of regenerative spinal cord tissue using the tissue of an Orca whale. Eventually, she created a formula from the Orca tissue that ended up turned herself into a giant humanoid Orca.