Castle Bleck Interior

Castle Bleck Interior is the main location of Castle Bleck during Super Paper Mario. Castle Bleck Interior is full of puzzles, mirrors and Dimentio illusions. Theres also many X Blocks and Luigi needs to hit a few of them. Mario and Luigi then need to chase Dimentio through the various chapters in the game and then Luigi must battle Dimentio. But Dimentio creates a block around Luigi and himself appears to commits suicide, killing Luigi as well; however, as they both appear unscathed later on, it was just another one of Dimentio's hoaxes. Mario continues on to Castle Bleck Inner Sanctum.

This level presents the only script edit in the PAL version of Super Paper Mario. In the orgional English script, Dimentio insult's Luigi's mustache, calling it a "shag". As this is a slang term for sex in British English, the insult was changed to make it so that Dimentio insults Luigi by calling him a "pushover".