Blue Firey is a recommended character that appeared in BFDI 21, BFDI 23 and BFDIA 9. He is one of the characters that voted Ice Cube in "The Glistening" and are a blue version of Firey.

Characters in the BFDI series are categorized by color groups. These groups include Pastel-Coral, Red-Maroon, Brown-Tan, Bronze-gold, Yellow-LemonLime, LimeGreen-Turquoise, Teal-Periwinkle, Violet, and Black-white.

Blue Spongy is a contestant in BFDI Mini Replicas, originating as a recommended character from "Bowling, Now with Explosions!". He placed 12th overall, or last, being eliminated in episode 2...

Blue Firey is a recolor of the character Firey, instead of being orange and yellow, it features a blue color, and a different face. Blue Firey is based off a recommended character who appeared in The Glistening, Hurtful!, and Catch These Hands.

Blue Spongy is a skin that can be used in-game by playing as the character Spongy. If you do not use the character Spongy, you will not be able to use this skin. It was released during ???. Blue Spongy is a recolor of the character Spongy, being a more blue color rather than being yellow.

One is a dark blue Algebralian shaped like the number one. Unlike other Algebralians in the series, One lacks arms and only has legs that are a lighter shade of blue than the rest of her body.

BlueTack is a female Fan-Made object character in the Battle for Dream Island series. She is Pin's non-canon arch rival, similar to Tack from Object Land or Inanimayhem. BlueTack is basically blue colored Pin with a white Star-scar on her torso. She also has a sticky note as blonde hair. She also has her very own Mech-Train S-Type P-700, donning the upgrade name: Tokaido Shinka-BlueTack. Due ...

Pink Girl, Blue Boy: Though the characters themselves do not have color and gender strictly correlated, elimination icons in BFDI and BFDIA use a blue sky background for male contestants and a pink one for female contestants.

Firey appears to be a blue flame. His outer flames are Azure, his inner flame is Neon Blue, and his outline is Blue Eyes. Blue Firey is characterized by his friendliness and loyalty to his friends and teammates, although he can be somewhat gullible...

Hosts do not appear in the actual BFDI Mini episodes, but in their season compilation video as voice-overs. This section includes algebralien characters including those that appeared in the main series, the Subscriber Specials, X Finds Out His Value, or other shorts. The 30 recommended characters from season 1 episodes 17 and 18.