Dark Fawful X

Dark Fawful X is a fanmade X variant for Fawful (Dark Fawful rather) in Mario and Luigi Bowser's Inside Story. He appears in MarioMario54321's Dark Star X videos. In SMG4, he only appears in Super Mario 64 Bloopers: 0% of Spaghetti on a TV in the random guy's house where it depicts him, Dark Star X, and Dark Bowser X pitted against MarioMario54321.