Prime vs. The Incredible Hulk (1995 series) #0

Kevin Green, Prime from Malibu's Ultraverse, is stranded in Marvel's universe due to the end of Ultraforce/Avengers #1. He has come to New York to seek help from the Avengers.

Teenage Kevin becomes Prime by generating the super-powered Prime body from within his own as an outer shell. When he stops being Prime he leaves the body behind to disintegrate.

Professor Eugene Wildeman has been using teen runaways in his gamma-ray experiments. Prime fights one of his mutated teens. He then stops Wildeman from abducting a girl, but the intelligent Hulk interferes thinking Prime is assaulting the respected Professor.

Eventually Prime and Hulk team up when Wildeman boasts of what he is doing, and transforms into his own giant green form.

After turning Wildeman over to the police, Kevin runs off leaving Hulk holding a collapsing Prime body. This issue leads immediately into Prime #infinity, where Prime meets Spider-Man and the Lizard, and gets back home to the Ultraverse. (Spider-Man has a 2-panel fly-by in this issue.)

This issue is built around the problems faced by teen runaways (beyond the ever-present danger of being kidnapped by mad scientists).