angler: rush (doors)
pinkie: ???
froger: ambush (doors) - the monster (iron lung)
chainsmoker: ???
blitz: ???
PANDEMONIUM: the flesh panopticon and sisyphus prime (ultrakill)
puddles of void mass: ??? - possibly hide (doors)
good people: dupe (doors) - scp 035 (SCP)
P.ai.nter: scp 079 (SCP) - possibly happy scribble or insidae (rooms)
wall dwellers: filth (ultrakill)
squiddles: ???
eyefestation: eyes (doors)
death angel/mr. kill: ??? - old blitz design (pressure)
mr. lopee: the interloper arg (g-mod)
styx: jack (doors)
mindscape man: ???
imaginary friend: ??? - old squiddle design (pressure)
the educator: baldi (baldi's basics)
abstract art: scp 173 (SCP)
Multi-monster: HIMSELF (rooms)
rachjumper: creator of survive the night (roblox)
bouncer: ???
skelepede: ???
candlebearer: ultrakill demons (ultrakill)
searchlights: ??? - possibly figure (doors)
sebby: ??? - gabriel (ultrakill)