Suggestions by @jesselee

Cindy Lou Who

as Cindy Lou Who in Sammy and the Ghoul School

Thing One and Thing Two

as Thing one and Thing two in Sammy and the Ghoul School

The Grinch (Character)

as Grinch in Sammy and the Ghoul School

Tigger

as Tigger in Sammy and the Ghoul School

Winnie-the-Pooh (Disney Character)

as Winnie the Pooh in Sammy and the Ghoul School

The Evil Queen

as The Evil Queen in Sammy and the Ghoul School

Magic Mirror

as Magic Mirror in Sammy and the Ghoul School

Brian Hull

as Soundtrack in The Ghoul School Movie

The Wiggles

as The Wiggles in Grumpy Jake

The Crows

as The Crows in Grumpy Jake

Lady Tremaine

as Lady Tremaine in Grumpy Jake

Zatanna Zatara

as Zatanna in Grumpy Jake

Alice Kingsleigh

as Alice Kingsleigh in Grumpy Jake

Princess Daisy

as Princess Daisy in Grumpy Jake

Professor Hinkle

as Professor Hinkle in Grumpy Jake

Sleepy (Snow White and the Seven Dwarfs)

as Sleepy in Grumpy Jake

Bashful (Snow White and the Seven Dwarfs)

as Bashful in Grumpy Jake

FAKE

as Madame Mim in Grumpy Jake

Fates

as Fates in Grumpy Jake

Harley Quinn (Dr. Harleen Quinzel)

as Harley Quinn in Grumpy Jake