Bruce Banner gets Hank Pym to transport him back to the Microverse, and along the way we get a one-issue detour against Shaper of Worlds, who is literally a world-shaper.
He made a microscopic version of Earth ruled by Nazis. And a super Nazi.
Then, Hulk continues on to Jarella’s world.
When he finds her, he has time for just one adventure and then Pym’s serum wears off.
Hulk starts to grow, quickly, and has to say goodbye. As he jumps away, he inadvertently damages her world.
Creators: Archie Goodwin and Herb Trimpe