Magneto promised to him, whether Liz is a mutant or not, he will tell Liz of what her father sacrificed. Magneto revealed to Liz that her father is a mutant and one of the Brotherhood of Mutants. Magneto, intending to keep his promise of reaching Liz, is delayed by the combined efforts of Iceman and Spider-Man. However, they are no match for Magneto, though they are able to buy Liz the time she needs to get away. Liz returns home, and demands her mother tell her the identity of her father. Her mother reveals that her Uncle Frank, otherwise known as the Blob is actually her father. This conversation is interrupted by Magneto, who tells Liz that she must go with him to see her father. This is prevented when the X-Men arrive at her doorstep. Liz is pressured to decide between the Brotherhood or the X-Men. After asking Spider-Man's advice, she decides she doesn't want to follow either group, and that she is angry at her mother for lying to her for all these years, and flies away. Spider-Man figures out that she's going to Mary Jane's house, and follows. After Liz arrives at Mary Jane's home, MJ suggests that she should talk to Kitty Pryde about being a mutant. Spider-Man arrives, and in order to gain Liz's trust, unmasks himself revealing that he is Peter Parker, one of her friends. Inspired by Peter's examples, Liz sees that she does not have to be defined by her parentage and chooses to use her powers responsibly. Liz promises not to tell his secret just as Iceman arrives, offering Liz a place at Xavier's School so she may learn to control her newfound powers. Liz, unwilling to return to her mother's house, decides to be with the X-Men until she can figure out what to do next. She promises to call Peter and MJ soon. In "Ultimate X-Men" #94 it is shown that Liz has taken the codename Firestar and is now seemingly getting along with the X-Men and has better control of her powers. In the Ultimate X-Men/Fantastic Four Annual, she is revealed to be the "Human Torch member" of the future Fantastic Four team. The modern version helps the X-Men and FF battle various threats raised by the future team. Liz appears in "" where she is a part of the Tomorrow People (Runaways), a government-funded mutant team with Jimmy Hudson, "Karen Grant", Derek Morgan aka the Guardian, and the Hulk.