Hulk [Bruce Banner] (origin recap); Rick Jones; Betty Ross; General Thunderbolt Ross
Synopsis
Rick uses some of Banner's machinery to transform the Hulk, who was stuck in his monster persona, back into Bruce. Bruce is incredibly weakened by the transformation and takes a chance in using the machinery on himself again which transforms him back into the Hulk's body but with Bruce Banner's mind. Now Bruce and the Hulk can switch at will using the gamma ray machine.
The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Vanisher (first appearance); GUEST: Special Agent Fred Duncan