Not to be confused with BlueLight439 or Bluey.

"Uh guys, we shouldn't be fighting."

— Blue Crayon, "Who the hell recommended Glowing Heart"

Blue Crayon is one of four co-hosts for OSO. She helps Crayon Box demonstrate and set up functions of the show with Green Crayon, Red Crayon, and Yellow Crayon.


Feels no confidence when it comes to hosting. Would like to help the contestants, but knows Crayon Box and Yellow Crayon would disapprove.


The Hosts

As of Episode 1, it's established that Blue and her fellow crayons reside inside of Crayon Box. She dislikes the brief conflict that Green and Red start, but is unable to stop it.

The Contestants

As of Episode 1, none of the contestants know what her purpose is.


Putty makes her uneasy by saying iffy statements, such as we’ll probably win.


Blue Crayon is a deep blue crayon with an unscathed tip.


Episode 2 - "Your Opinion is Invalid"

Blue Crayon is seen with Red drawing a staircase in an attempt to recover Paintball from the top of the dome, and catches Paintball when she falls.

Later, Blue Crayon pushes a chalkboard for Crayon Box, but Crayon Box later just kicks the chalkboard torwards her.

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