Gender: Male Color: Blue Features: Has a button instead of a left eye and wears a small yellow crown. He cannot see the player if they are wearing a box. Appearance: Day 1 to Day 5 (Finale)

Gender: Male Color: Green Features: He is blind but has excellent hearing. His arms are very long, so he can catch players even if they are in a box. You must simply run away quietly. Appearance: Day 2 to Day 4

Gender: Male Color: Orange Features: The smallest and fastest, resembling a lizard. He lives in a lizard-like den (Orange's Room) and wakes up every 3-5 minutes. If his food bowl isn't filled, he patrols the map on a set path to find and eat players. Appearance: Day 3 to Day 4

Gender: Male Color: Purple Features: Has long, thin limbs and a flat, round face. His mouth opens like castanets. His pupils are large, and he usually lives inside vents, with only his eyes and arms visible. He catches anyone who steps on the water in front of the vent; you must step on the dry footprints to survive. Appearance: Day 3 to Day 4

Gender: Male Color: Red Features: Wears a scientist's outfit and has a perfectly spherical head. A mastermind-like character. He is the one who turned humans into the Rainbow Friends monsters. Appearance: None. Only provides commentary via broadcast.

Gender: Female Color: Rainbow Features: Wears a small gold crown embedded with a Ghost Green emerald. Her left eye is covered by a mint-colored cat-shaped eyepatch. She is the most cruel monster and harbors a secret crush on Blue. Appearance: Finale (the very end)