When "Change OK" appears on the screen, you may transform into one of 3 character types (Ninja, Tengu or Ninja Dog), fight using their unique features. To transform, push to open the character select screen. Then move left or right with switch among characters, but take caution that you cannot attack or defend during transformation. Each character has a transformation time limit. You will transform back when time expires. You cannot use the character until the timer recovers.