Mettaton starts in his box form which is indestructible, he can zap enemies taking half their HP, his weakness is to flip the switch on his back turning him into his ex form, his ex form has 12 attack and 7 defence, his weakness is his heart shaped core, his ultimate final form is his neo form. his neo form has 30000 HP, 90 attack and -4000 defense. his right arm is a cannon.