After a few more encounters with Spider-Man, it was revealed that Peter's friend Liz Allan was Raxton's stepsister.
Raxton broke into a pharmaceutical company to steal chemicals which would reverse his condition permanently.
When the procedure failed, he went berserk and kidnapped Liz.
Liz was saved by Spider-Man, but Molten Man was buried beneath the laboratory.
Peter Parker, as Spider-Man, was forced to nearly miss his high school graduation to stop the Molten Man's first crime spree.