Firehair is a mutant psychic from 1,000,000 B.C. who bonded with the Phoenix Force following the slaughter of her tribe. Resisting the urge to become Dark Phoenix, she founded the prehistoric Avengers to protect the Earth from superbeings like herself. Phoenix fell in love with Odin, but the two split after Odin tried to wed her without her consent. She left for the stars and the team she created fell apart. Despite her grudge, Phoenix still cared for her home planet; she collaborated with the Elder Goddess Gaea to mother Odin's future child, Thor, but on the day of his birth, he was assassinated. Phoenix brought Thor back to life and she saw him as her own son.

Age: Unknown

Hair: Red

Eyes: Green