Mouser is a large mouse boss who throws bombs. He is encountered in World 3-3. His attack pattern involves throwing several bombs at you, which explode after a short fuse. To defeat Mouser, you must pick up the bombs he throws and throw them back at him. He requires three hits to be defeated. Be careful to avoid the explosions of his bombs, as they can deal significant damage. Sometimes, extra bombs or vegetables can be found in the arena if Mouser isn't throwing enough. Recommended Character: Toad for his quick pulling and strong throwing arm, making it easier to catch and return bombs efficiently. Focus on dodging and precise throwing.
While Mouser’s primary weapon is the explosive bomb, he later transitioned to a mechanical role as the boss of the Control Kart challenge in Mario Kart DS.
While Mouser debuted as a bomb-tossing boss in this title, he later made his racing debut as a playable driver in Mario Kart Tour during the 2022 Halloween Tour.