Baxter Stockman was once a promising young scientist working with a small research facility investigating the potential of genetic engineering. Baxter thought he found a way to use gene splicing to grant people special abilities, and decided to use himself as a guinea pig. The procedure was successful but had consequences he didn’t anticipate; he doesn’t just have a fly’s ability, but also its appearance. After this he chose to make the best out of the situation and register as a super hero, calling himself The Fly. He eventually joined The Justice Coalition where he met Peter Parker, a.k.a. Spider-man. The two had very similar histories, but Baxter was shocked to learn that Parker was an unwilling participant in the experiment that made him what he is. After much discussion, Parker and Stockman worked together to found The Post Experimental Re-Integration Society to help people like them find a place in society.