Crystal Moai is the third boss in Melody of Darkness' Tower of Despair.
The Moai will usually hover around the player, shooting ice bolts or rings at them. When in solid form, it can dash and smash against the ground, creating ice spikes. When in fragile form, it will either shoot a freezing beam or shatter into several bits and dash towards the player. It is only vulnerable in fragile form. It has 4000 HP.