King Poseidon (キングポセイドン Kingu Poseidon?) is an amphibious enemy Reploid from Mega Man X4 that attacks with a trident and with shots from its back. It appears in Web Spider's Jungle stage. This enemy can be destroyed by X's Frost Tower or Lightning Web in one blow, but except for those two and Rising Fire, it is invulnerable to all other Special Weapons. For the best results, just use Zero's saber or X's buster.