Crystal King is an enemy Mario had to face before his final confrontation with Bowser in Paper Mario. Crystal King guarded the last Star Spirit, Kalmar, in the Crystal Palace. Crystal King's body is invisible and he can also make his cloak and crown invisible too. Crystal King can fly, summon Crystal Bits and shoot ice beams. When he gets desperate, he begins cloning himself and recovering HP.
Crystal King is incredibly powerful and Mario's survival is not guaranteed. If not beaten quick enough, Crystal King will recover twenty HP at least three times. Mario should equip badges that can bypass defense, as well and multi-strike badges. Watt comes in handy because her main attack can breach defense and doesn't use FP. When Crystal King clones himself, Mario should use any multi-strike items he has (items such as Thunder Rage). The special attacks Time Out and Star Storm are also necessary.
When Mario defeats him, Crystal King says, "Oh no! The last Star Spirit!! King Bowser, forgive meeeeeeeee!!". He then spins out of control and disappears while sparks are flying away from him. That, however, was simply Crystal King teleporting. He then proceeded to quit working for Bowser, as his paycheck was seriously overdue. Crystal King can now be found on the forum website www.digibutter.nerr.biz.