Who know:

Flumpty bumpty

He is sadistic and if you hearing the phone call (hard boiled mode) Something eyesaur is talking the player about flumpty bumpty's full name who named choas god of death he is not cartoon eggs he is really angry

Birthday boy blam

He is sadistic pawn one he is best friends of flumpty that who he helping the flumpty bumpty

The Beaver

He is not cartoon animals he is flumpty's victim that flumpty who he did turned him into sadistic human-beaver entities

The redman

He is not spider cartoon he was Victim manipulated by flumpty

See camera six see newspapers article

Newspapers is talking about man who drink lava live (kinda) and referencing the origin of the redman

He was formerly human but it's not to see were normal human appearance that the redman's past

He is undead skeletal figure

The owl

Owl is cartoon animal again I think flumpty did give a intelligence for this owl

Eyesaur

That's not cartoon monster that's skinless entities also end of hard boiled mode see newspaper article again

There

Also " Allegendly, flumpty has constructed a skinless man headed monster out of the corpse of his game's unfortunate past contestants." Newspaper article referencing eyesaur

He is made out of corpse of many people/victim who faced flumpty bumpty and lost

Flumpty created eyesaur and also end of phone call (hard boiled mode) Something sounds is eyesaur's reversed jumpscare sounds can be hearing

Grunkfuss the clown

Unknown (he were actual victims and flumpty turned him into eldritch clown)

Champ and chump

Both unnamed person are also player is champ and male characters is best friends of player who named chump (that's creature name it's nameless that human name)

Both are killed by flumpty, flumpty did skinned alive and cut the arm

Also jonochrome did say "flumpty kills you both, you are champ, and he is chump"

Golden flumpty

He is demon entities he is not egg if you see Golden flumpty's body/appearance that's mysterious demon in the suit egg cartoon