Mssr Boo (short for Monsieur Boo) is a boss faced by Toad in the VS COM mode of Wario's Woods for the Super Nintendo Entertainment System. Mssr Boo is a ghost who wears a red beret. While he has Boo in his name, Mssr Boo's relationship with the species has not been established. On Normal difficulty, Mssr Boo is the seventh boss fought, but in Hard difficulty it is the first boss.
[Edit]  / Super NES version
| ||
|---|---|---|
| Characters | Protagonists | Birdo • Green Toad • Sprite • Toad |
| Antagonists | Wario • Thwomp • Pidgit | |
| Bosses | NES | Boom • Drago • Fake Wario • Fauster • Goro • Mad • Seizer |
| SNES | Aqualea • Carlton • Dedar • Galrog • Harley Q • Harry H • Katsini • Lizardon • Mangylox • Mssr Boo • Parrotor • Razor • SamSpook • Sarissa • Sven • Tad Rock • Thak | |
| Enemies | Beaker • Dovo • Fuzz • Scram • Spook • Spud • Squeak | |
| Items | Bomb • Coin • Diamond • Egg | |
| Locations | Wario's Woods • Wario Castle | |