Suggestions by @user_284781

Null (Baldi's Basics)

as Characters in Baldi

Dr. Reflex

as Characters in Baldi

The Test

as Characters in Baldi

Mrs. Pomp

as Characters in Baldi

Beans

as Characters in Baldi

Chalkles

as Characters in Baldi

Cloudy Copter

as Characters in Baldi

Gotta Sweep

as Characters in Baldi

1st Prize

as Characters in Baldi

Principal of The Thing

as Characters in Baldi

It's a Bully

as Characters in Baldi

Arts and Crafters

as Characters in Baldi

Playtime (Baldi's Basics)

as Characters in Baldi

Baldi

as Characters in Baldi

Enderman

as Raoul Walsh in Characters golden age stars could have played

The Lost Man

as Bill Robinson in Characters golden age stars could have played

Mr Bean (Mr Bean: The Animated Series)

as Bill Robinson in Characters golden age stars could have played

Balloony

as Cary Grant in Characters golden age stars could have played

Little Girl

as Shirley Temple in Characters golden age stars could have played

Gotta Sweep

as John Gilbert in Characters golden age stars could have played