I just thought about this. Krokopatra is a Rank 5 Boss, or at least the game says it is. But for my marbles, Krokopatra is too easy to be a Rank 5 Boss.
Malistaire is too easy to be the last boss in the game up to Celestia. They've nerfed this game so many times to appease the people who complain about the game being too hard (which it isn't) that they may sometimes over-nerf something and make it too easy.