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Ghosts...don't...die! Heh heh heh! Can you get out of here...ALIVE?
~ The Boos in Super Mario 64.

The Boos are nasty ghost-like creatures that are seen a lot in the Super Mario Bros. series.

Their main method of attack is to attack Mario only while his back is turned. If Mario looks at them they freeze and turn invisible and do not move at all until he turns his back to them again.

The most powerful and most clever Boo among them is their vile leader, King Boo. The second most powerful of Boos are the Big Boos.

Variants

  • Atomic Boo
  • Balloon Boo
  • Big Boo
  • Big Frame Boo
  • Big & Little Boo
  • Black Boo
  • Blindfold Boo
  • Bomb Boo
  • Boo Balloon
  • Boo Block
  • Boo Buddy Snake
  • Boo Buddy Swarm
  • Boo Guy
  • Boohemoth
  • Boo Man Bluff
  • Boo Stack
  • Broozer
  • Calm Fishing Boo
  • Circling Boo Buddies
  • Dark Boo
  • Dark Dark Boo
  • Disappearing Boo Buddy
  • Eerie
  • Fishin' Boo
  • Frame Boo
  • Ghoul Guy
  • Gold Boo
  • Green Boo
  • Li'l Boo
  • Mad Big Boo
  • Mad Boo
  • Mini Boos
  • Octoboo
  • Peepa
  • Red Boo
  • Shiny Boo
  • Sleepy Boo
  • Snufit
  • Stretch
  • Tail Boo
  • Terekuribō

Gallery

Trivia

  • Boo's Mario Strikers Charged Football outfits resembles the Spooky Speedster's outfit.
  • The manual for Mario Kart DS refers to the item Boo as "Boo Hoo".
  • Creator Shigeru Miyamoto got the idea for Boo from the wife of his co-worker and close friend Takashi Tezuka, as she is shy but one day got very angry at him for coming home late from work.
  • In both Super Mario 64 and Luigi's Mansion, Boo's old laugh is just a sped up version of Bowser's laugh from Super Mario 64 with echoes added. It was also reused in Mario Tennis 64 as well as the Nintendo DS remake of Super Mario 64 and in the first seven Mario Party games.
  • Strangely, in Mario Golf: Toadstool Tour, Boo hits right-handed, but in the Mario Baseball series, it hits left-handed.
  • In the Animal Crossing games, a character named Wisp appears, who bears a resemblance to Boo. The main difference is the facial appearance, and headgear.
  • In Super Mario Sunshine, the Boos are the only Boos that can be defeated by jumping on them outside of the Mario RPG titles.
  • Mumbies, enemies from the Kirby series, attack in an identical way to Boos.
  • The Boos' very own name is also shared by a group of fellow ghostly enemies called Boom Boos (also called "Booms") ruled by their leader King Boom Boo from Sonic Adventure 2.
  • According to Professor E. Gadd in Luigi's Mansion, Boos grow in power when they are together.

Navigation

           Mario Villains

Koopa Troop
Bowser | Bowser Jr. | Koopalings: (Larry Koopa | Morton Koopa Jr. | Wendy O. Koopa | Iggy Koopa | Roy Koopa | Lemmy Koopa | Ludwig Von Koopa) | Kamek | Kammy Koopa | King Boo | King Bob-omb | Petey Piranha | Torkdrift | Goombas | Boos | Piranha Plants | Goomba King | Koopa Bros | Tutankoopa | Tubba Blubba | General Guy | Lava Piranha | Huff N. Puff | Crystal King | Cackletta | Fawful | Antasma

8 Bit Club
Wart | Mouser | Tryclyde | Fryguy | Clawgrip | Birdo | Shy Guys

Secret Society of X-Nauts
Sir Grodus | Lord Crump | Shadow Sirens | Doopliss | Shadow Queen

Shroobs
Elder Princess Shroob | Princess Shroob | Commander Shroob

Count Bleck's Minions
Count Bleck | Nastasia | O'Chunks | Mimi | Dimentio | Mr. L

Smithy Gang
Smithy | Exor | Mack | Bowyer | Yaridovich | Axem Rangers | Blade | Boomer | Count Down | Cloaker | Domino | Clerk | Manager | Director | Factory Chief

Kremlings
King K. Rool | Kremling Krew | Klump | Krusha | Krunch | Klubba

Other
Army Dillo | Belome | Bonechill | Brobot | Broodals | Chuckolator | Cortez | Count Bleck's Father | Dark Star | Dino Piranha | Donkey Kong | Draggadon | Eely-Mouth | Francis | Gloomtail | Gooper Blooper | Grubba | Hooktail | Jr. Troopa | Kaptain Skurvy | Kent C. Koopa | King Croacus | King Kaliente | Mechawiggler | MegaBug | Mizzter Blizzard | Mollusque-Lancuer | Nabbit | Necky | Peewee Piranha | Phantom of the Bwahpera | Rabbids | Rabbid Kong | Rawk Hawk | Ruined Dragon | Shadoo | Smorg | Squizzard | Sunnycide | Tatanga | Viruses | Waluigi | Wario | Wracktail | Wingo | Wizpig

           Luigi's Mansion Villains

Luigi's Mansion
Boos
Portrait Ghosts
Biff Atlas | Bogmire | Boolossus | Chauncey | Clockwork Soldiers | Floating Whirlindas | Henry and Orville | Jarvis | King Boo | Lydia | Melody Pianissima | Miss Petunia | Mr. Luggs | Nana | Neville | Shivers | Sir Weston | Slim Bankshot | Spooky | Sue Pea | Uncle Grimmly | Vincent Van Gore

Luigi's Mansion: Dark Moon
Big Boo | Poltergeist | The Three Sisters
Possessors
Grouchy Possessor | Harsh Possessor | Overset Possessor | Shrewd Possessor | Tough Possessor
ScareScraper
Beetle Whisperer | Bomb Brother | Creeper Launcher | Primordial Goo | Terrible Teleporter | The Brain