The Dark Disciples are followers of Morpho who live in the ruins of Octopon. They were once ordinary humans, until Morpho "infected" them with Dark Water, turning them into loyal servants of both him and the Dark Dweller. Dark Disciples could be distinguinshed from normal humans by their eyes, which were much larger than other people's and "swam" with Dark Water. They also wielded unique weapons: squirt guns loaded with Dark Water. The Dark Disciples were all returned to normal when Ren put the first seven Thirteen Treasures of Rule in the seal in the lighthouse.