Super Mario Sunshine
Red Boos are only seen in Hotel Delfino of Sirena Beach in Super Mario Sunshine. The Red Boos can be sprayed with water from F.L.U.D.D. and they turn into platforms for Mario to access higher areas. Red Boos cannot be defeated at all in this game unlike the regular Boos. It should be noted that, unlike the regular Boos, the Red Boos in this game aren't hostile and won't chase Mario around.
Mario Party 4
In Mario Party 4, a single Red Boo appears on the Boo's Haunted Bash board. Going past it either makes it appear or disappear. Due to the Red Boo's presence, the other white Boos and the Haunted Train disappear until the larger Red Boo disappear. Certain areas can now be accessed as long as the large Red Boo is shown.
Mario Party 6
In Mario Party 6, a Red Boo plays a large role of the board games. It now can steal stars and/or coins for players on certain boards, and more Red Boos appear mainly in the Duel Mini-games.
Mario Party 8
In Mario Party 8, Red Boos play a major role on King Boo's Haunted Hideaway, where they wait for you in pitfall rooms. If you get there, they will throw you into the pit. Red Boos also own the shops in King Boo's Haunted Hideaway. They also appear in the minigames Boo-ting Gallery and Spector Inspector.
|Big Boo • Bigger Boo • Black Boo • Boolossus • Boos in Luigi's Mansion • Boos in Luigi's Mansion: Dark Moon • Bootler • Franky • Herbert • Igor • King Boo • King Boo (Super Mario Sunshine) • Lady Bow • Lahla • Peeka • Spooky Speedster • Stanley • The Creepy Steeple Boo|
|Balloon Boo • Big Boo • Big Boo (Paper Mario) • Big Frame Boo • Big & Little Boo • Blindfold Boo • Bomb Boo • Boo • Boo Balloon • Boo Block • Boo Buddy Snake • Boo Buddy Swarm • Boo Guy • Boohemoth • Boo Man Bluff • Boo Stack • Calm Fishin' 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 Boo • Octoboo • Peepa • Phantom Guy • Red Boo • Shiny Boo • Sleepy Boo • Snufit • Stretch • Tail Boo • Terekuribō|
|Characters||Protagonists||Mario • F.L.U.D.D. • Princess Peach • Toadsworth|
|Antagonists||Bowser • Bowser Jr./Shadow Mario|
|Other Characters||Il Piantissimo • Pianta • Noki • Toad • Hotel Delfino Manager • Yoshis|
|Locations||Areas||Isle Delfino • Delfino Airstrip • Delfino Plaza • Bianco Hills • Ricco Harbor • Gelato Beach • Pinna Park • Sirena Beach • Noki Bay • Pianta Village • Corona Mountain|
|Other Areas||Windmill Village • Hotel Delfino|
|Bosses||Main Bosses||Bowser • Bowser Jr. • Shadow Mario • Petey Piranha • Gooper Blooper • Phantamanta • King Boo • Mecha Bowser • Eely Mouth • Wiggler|
|Minor Bosses||Polluted Piranha Plant • Plungelo • Monty Mole|
|Enemies||Enemies||Piranha Plant • Strollin' Stu • Boo/Red Boo • Bullet Bill • Electro Koopa • Snooze-a-Koopa|
|Miscellaneous||Items||Shine Sprite • 1-up Mushroom • Water Bottle • Fruit|
|Nozzles||Spray Nozzle • Hover Nozzle • Rocket Nozzle • Turbo Nozzle|
|Other||Fluff Festival • Watermelon Festival|