Check this out, I'm back to working on my RPG again and sprited one of the bosses: Frosting Armor.
The player fights this boss on top of a giant wedding cake. The main boss in the battle is actually the person who's piloting the Frosting Armor--alone he's pretty weak, but he likes to annoy his opponents by hiding inside the Frosting Armor, which can switch between different kinds of defenses each rendering one of the player's attacks useless.