Bruce Banner (Earth-76)

"Finally! More power than my old body had! I am raging power! I will crush the Hulk's reputation like a pebble, and the world will long respect and fear me!"

-Leader, on becoming the Hulk

Earth-726
Earth-726 follows the same history as Earth-616, up until the debut of the Leader. After fighting the Hulk once, he realized that he would fare much better in the villain world if he switched bodies with Hulk. He tried taking this risk, though he knew his intelligence would decrease a bit. He created a suit for Sandman to use to capture the Hulk, which he did. When he transformed into Bruce, he tried switching bodies, and was successful. Bruce's personality still existed and was active in the Leader's body, however, and he vowed that with his increased intelligence, he would find a way to switch them back.