While the Justice League attempts to protect the United Nations from Grodd's gorilla army, Mr. Mxyptlk pops up from the fifth dimension and thinks it would be great fun to put each of the Super Heroes' brains into another hero's body.

Cast: P.J. Byrne, Kevin Conroy, Gilbert Gottfried, Natalie Lander, Jason J. Lewis, David Sobolov, Stephen Tobolowsky