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>The Unknown Dungeon uses the same name as the Cerulean Cave used in Generation I. Also, both of these locations are the only places in their respective games where Mewtwo can be encountered. Additionally, an NPC blocks the entrance of each Unknown Dungeon until the player becomes the Champion, both NPCs tell the player the exact same thing if he or she interacts with them, and mysteriously vanish after their conditions are met.
Are the npc who guard Mewtwo caves actually Mewtwo illusions?
