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.
==Layout==
Black Bowser's Castle's entry hall consists of a hallway, where a portrait of a color-drained Princess Peach is initially seen, just out of reach. When Mario tries to lower it, however, a trapdoor opens leading to a cell instead. Mario and Huey are ambushed by six Slurp Guys and Roy Koopa. At the start of the battle, Mario's paint is drained by the Slurp Guys, and Roy uses a cannon to fire it back at him. After taking enough damage, Roy orders Paint Guys to put all their paint in his cannon, then mixes it up to create black paint. Mario must remove the paint with the Washing Machine Thing, and then defeat Roy by dealing enough damage.
A door leads Mario and Huey to a factory, where all of the paint stolen from Prism Island is brought to mix into black paint. The black paint is later used to color dangerous weapons, such as Banzai Bills and Bob-ombs, which Black Bowser intends to use to paint the world black. Mario must go on the conveyor belt, defeat a Paint Guy, and then stand in its place. Summoning Huey, Mario asks him to act as a bucket so they can progress. Continuing on the conveyor, Huey sees that Bowser is producing black paint bombs. Mario can escape the conveyor belt by sliding down a Goal Pole. Huey observes Mega Bob-ombs and suggests that they blow them up to stop the black paint. To destroy the crates in his way, Mario must knock Bob-ombs down and get them to blow up. He can guide some Bob-ombs to the giant ones, causing a chain reaction that explodes the entire factory. The black paint slowly begins rising, and Mario must escape before it touches him.
In the next room, Mario must run from a flood of black paint to escape into a Warp Pipe leading back to the entry hall. Peach's portrait disappears, and a purple rope appears instead. Pulling it opens a door into another hallway, where Huey tells Mario that he will always be grateful for their friendship. In Black Bowser's arena, Peach's portrait is hanging over his throne, and he challenges Mario. As Black Bowser takes damage, the black paint layer slowly disappears. Eventually, he looks around in surprise and asks Mario if Peach is with him. The black paint then overtakes Bowser and he enlarges in size. Any damage Mario does during the next turn is restored through Black Bowser re-absorbing black paint. To combat the black paint, Huey transforms himself into a Battle Card, turning him 3D again. Mario must use Huey to block Black Bowser's attacks and absorb the black paint.
After taking enough damage, Bowser spits out all his paint for one final attack. If Mario blocks this, Bowser is severely weakened and will be defeated by the next attack. The castle starts to collapse as the black paint rises. First, Mario must repaint Peach, and then run out to the castle's entrance. Luigi gets Mario and Peach safely on his kart. Huey refuses to join them, saying that he must prevent the black paint from spilling again. Huey squeezes and transforms Black Bowser's Castle into a card, which drops down from above. Mario, Luigi, and Peach return to Port Prisma, and Toad notices the card. Huey comments that he has to take the black paint far away, flying into the sky and disappearing. At the end of the game, everyone in Port Prisma celebrates the return of the six Big Paint Stars, and Peach reassures Mario that Huey is still out there, watching over them.
==Enemies==
*Bob-ombs
*Hammer Bros.
**Ice Bros.
**Boomerang Bros.
**Fire Bros.
**Sledge Bros.
*Slurp Guys
*Slurp Snifits
*Paint Guys
*Roy Koopa (boss)
*Black Bowser (final boss)
**Black Lava Bubbles
==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.
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de:Festung des schwarzen Bowsers
it:Castello di Bowser nero
Category:Castle-themed
Category:Dark-themed
Category:Locations in Paper Mario: Color Splash
Category:Levels in Paper Mario: Color Splash