Available only after clearing all previous Rehearsal Room Modes.

Unlockable	How to Unlock
Iron Man Archer	Clear Ultra Mode in the Rehearsal Room with an Archer as the Enemy.
Iron Man Knight	Clear Ultra Mode in the Rehearsal Room with a Knight as the Enemy.
Iron Man Mage	Clear Ultra Mode in the Rehearsal Room with a Mage as the Enemy.
Iron Man Monk	Clear Ultra Mode in the Rehearsal Room with a Monk as the Enemy.
Iron Man Soldier	Clear Ultra Mode in the Rehearsal Room with a Soldier as the Enemy.