Black Bowser's Castle

Black Bowser's Castle is the final level of Paper Mario: Color Splash. Roy Koopa and Black Bowser are bosses encountered in this level.

Trivia

 * This level is one of two areas to not have a designated region on Prism Island, the other being Port Prisma.
 * Roy Koopa is the only Koopaling not guarding a Big Paint Star in this level.