Alternate Costumes
Highlight a fighter at the character selection screen, then press 1 + 2, 1 + 3, or 1 +4.

Hidden Bowling Game
This is available only in two player mode, on any stage. Both players must play as Armadon and perform the Spinning Death (1 + 3, Away, Toward, Down) move simultaneously three times in a row (colliding). If done correctly, both players and their worshippers will walk off screen for a bowling game. Humans are used as pins, and the players bowl themselves by using the Spinning Death move.