Incredible Hulk #158 (Thomas & Gerber/Trimpe, Dec 1972). Between issues, the Leader decides to let the Hulk and the Rhino destroy each other. But the duel escalates into orbit, flinging the combatants all the way to the High Evolutionary’s concealed Counter-Earth! Pretty exciting way to connect Adam Warlock back to the rest of Marvel… except Warlock takes one look at them and declares, “No thank you!!”
Incredible Hulk #157 (Goodwin/Trimpe, Nov 1972). The Leader possesses the Rhino’s body to attack Betty’s wedding to Major Talbot. ‘cause, y’know, it went so well last time he tried.
