Maria Callasantos

The mutant known as Feral grew up in a New York City tenement as Maria Callasantos. She had an older sister, Lucia, who would also prove to be a mutant, a younger brother, Matteo, and a younger sister, Carolina. Their father beat his wife and abandoned the family after the birth of Carolina, the youngest of the children. He was eventually found dead from a drug overdose.

Maria blamed her two younger siblings for the fact that their father deserted them. Carolina later fell down a staircase to her death while Maria was babysitting her; it is unclear whether Carolina's death was an accident or whether Maria killed her. Later, Matteo was chasing Maria's pet pigeons on the tenement roof when he allegedly tripped over the ledge. He held onto the ledge as long as he could, but soon fell to his death. Maria was a witness, and, again, it is unclear if she had killed him.