| "Bowser" may be referring to two or more different villains. If you're uncertain which one you're looking for, just flip a coin.|
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- Bowser; The supreme master of the evil Koopa Kingdom and the main villain of the Super Mario franchise.
- Bowser (White Knuckle Scorin'); The incarnation of Bowser from the one-shot White Knuckle Scorin' comic.
- Bowser Jr.; Bowser's son and second-in-command.
- King Koopa (Mario Cartoons); The incarnation of King Bowser/King Koopa from the DiC Super Mario Bros. cartoons.
- President Koopa; The incarnation of Bowser/Koopa from the 1993 live-action movie Super Mario Brothers.
- Paper Bowser
- Baby Bowser
- Paper Bowser Jr.
- Commander Bowser