Feral

Maria Callasantos, also known as Feral, (voiced by Kathleen Barr) is morlock from the X-Men series. She also has an older sister named Thornn. After there mutantions and death of there family Feral and her sister moved underground to join the Morlocks. Maria was one of the depowered mutants that got there powers back. Feral was killed by Sabretooth when she was on a mission with with Thornn, Wolverine and Wolfsbane. After Maria was killed she return to earth as a ghost and gained the ability to pass through solid objects.

Feral was offered a chance to get her life back if she serves the demons, undead and gods as a ghost.