Count Bleck is the central antagonist of Super Paper Mario. During the game, he summons the Chaos Heart by forcefully marrying Princess Peach to Bowser and uses it to open The Void, which has the power to destroy all dimensions. He also leads a troop of minions, with its primary members being Nastasia, O'Chunks, Mimi, Mr. L, and Dimentio.
(Source: Super Mario Wiki)
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