Red Boo

From the Super Mario Wiki

A Pink Boo as seen in Super Mario Sunshine.

Red Boos (also known as Pink Boos) are a light red or pink colored sub-species of Boos, making their first appearance in Mario Party 4. Red Boos are treated as generic Boos and they are no different from any normal Boos, with the exception of the reddish color. Pink Boos were possibly introduced to take over the roles of normal Boos, since Boo was a host and later a playable character in the Mario Party series. Alongside Pink Boos, there is a crowned variety of Pink Boos. In Mario Party 4, Pink Boos are mainly featured on the board Boo's Haunted Bash. On that board, Pink Boos can give a player a ride on the Mystery Train. In later Mario Party games, they served no role other than stealing coins or stars from other players or being featured in various mini-games.

Super Mario Sunshine introduced new mechanics to the Pink Boos. Unlike other Pink Boos, the Isle Delfino variety can be frozen and turned into small platforms (Platboos) when touched by liquid, whether it's FLUDD's water or Yoshi Juice. These platforms can be used to reach higher areas, primarily in Hotel Delfino. The Hotel Manager asks Mario to get rid of the Boos haunting his hotel. Although Mario cannot completely defeat Pink Boos, they leave the Hotel Delfino after Mario defeats their leader, King Boo.

Pink Boos reappear in Mario Party 8, in King Boo's Haunted Hideaway. These Boos sold Candies to the player. They also threw the player out of the mansion whenever they would reach a dead end.

Boo Characters
Bigger Boo \| Boolossus \| Boos in Luigi's Mansion \| Bootler \| Franky \| Herbert \| Igor \| King Boo \| Lady Bow \| Lahla \| Peeka \| Spooky Speedster \| Stanley \| The Creepy Steeple Boo
Boos
Atomic Boo \| Balloon Boo \| Big Boo \| Big & Little Boo \| Blindfold Boo \| Bomb Boo \| Boo \| Boo Balloon \| Boo Buddy (SMW) \| Boo Buddy (YS) \| Boo Buddy Block \| Boo Buddy Snake \| Boo Guy \| Boo Man Bluff \| Broozer \| Calm Fishin' Boo \| Circling Boo Buddies \| Dark Boo \| Dark Dark Boo \| Disappearing Boo Buddies \| Fishin' Boo \| Li'l Boo \| Mad Big Boo \| Mad Boo \| Red Boo \| Sleepy Boo \| Stretch \| Terekuribo

Super Mario Sunshine Characters
Mario \| Peach \| Toadsworth \| FLUDD \| Pianta Attorney \| Pianta Captain \| Pianta Judge \| Doot-Doot Sisters \| Sunglasses Salesman \| Delfino Police \| Big Daddy \| Noki Elder \| Sand Bird \| Great Sunflower \| Il Piantissimo
Super Mario Sunshine Bosses
Shadow Mario \| Petey Piranha \| Gooper Blooper \| Wiggler \| Mecha Bowser \| Phantamanta \| King Boo \| Eely Mouth \| Chain Chomp \| Bowser Jr. \| Bowser
Super Mario Sunshine Species
Bee \| Blooper \| Bob-omb \| Bombshell Bill \| Boo \| Bullet Bill \| Butterfly \| Cataquack \| Chain Chomplet \| Cheep-Cheep \| Coo Coo \| Dune Bud \| Electro-Koopa \| Isle Delfino Birds \| Jumping Blooper \| Klamber \| Missile Bill \| Noki \| Pianta \| Pink Boo \| Piranhabon \| Piranha Plant in the Generator \| Plungelo \| Pokey \| Pokey Sprout \| Poink \| Seedy Pod \| Skeeter \| Sleepy Boo \| Smolderin' Stu \| Snooze-A-Koopa \| Soarin' Stu \| Strollin' Stu \| Sunflower Kid \| Swipin' Stu \| Swoopin' Stu \| Tanooki \| Toad \| Wind Duppy \| Yoshi