Peter Porker was born a spider (simply named Peter). Residing in the basement lab of May Porker, a slightly goofy animal scientist who had created "the world's first atomic powered hairdryer," hoping that "the introduction of nuclear fission into America's beauty salons" would "revolutionize the hair care industry". After dousing her head with water and activating the dryer, May Porker accidentally irradiated herself, and in a fit of delusion, bit Peter, who then found himself transformed into an anthropomorphic swine much like May Porker herself. Running from the Porker homestead disoriented, Peter soon came to realize that he still retained a spider's abilities.
After this startling series of events, Peter (who adopted the surname "Porker", that of his benefactor May Porker, who after the accident reverted mentally to a state in which she believed she was Peter's loving aunt) dedicated himself and his new-found abilities to fighting injustice as the Spectacular Spider-Ham.