Given powers similar to Human Torch's in a chemical accident, Frankie Raye was able to engulf her body in flame without harm. Mr. Fantastic, leader of the Fantastic Four, helped Frankie to cope with her new powers. During her stay with the Fantastic Four, the planet devourer Galactus returned to Earth. In exchange for the Earth's safety, Frankie agreed to become Galactus' herald. Galactus augmented Frankie's powers to cosmic proportions, with energies that rivaled those of a small sun. Calling herself Nova, Frankie served Galactus for a time before embarking on her own adventure in space.