Castle Bleck is an area in Super Paper Mario. It is the eight and final level.
8-1,[]
8-1 is the first level in Castle Bleck. In it, O'Chunks is fought, and after that, Bowser supposedly dies.
8-2,[]
8-2 is the second level in Castle Bleck. In it, Mimi is fought, and after that, Princess Peach supposedly dies.
8-3,[]
8-3 is the third level in Castle Bleck. In it, Dimentio is fought, and after that, Luigi supposedly dies.
8-4,[]
8-4 is the fourth level in Castle Bleck. In it, Count Bleck is fought. After he is defeated, Luigi, Princess Peach, and Bowser become playable again, and Super Dimentio is fought.