Suggestions by @jesselee

WireWolf

as WireWolf in Scooby Doo: Belle

Harley Quinn (Dr. Harleen Quinzel)

as Harley Quinn in Scooby Doo: Belle

The Joker (Character)

as The Joker in Scooby Doo: Belle

The Penguin (Oswald Cobblepot)

as The Penguin in Scooby Doo: Belle

Buzz Lightyear

as Buzz Lightyear in Scooby Doo: Belle

FAKE

as Buzz Lightyear in Scooby Doo: Belle

Batman

as Batman in Scooby Doo: Belle

Alfred Pennyworth

as Alfred Pennyworth in Scooby Doo: Belle

Eeyore

as Eeyore in Scooby Doo: Belle

Piglet (Winnie-the-Pooh)

as Piglet in Scooby Doo: Belle

Tigger

as Tigger in Scooby Doo: Belle

Sandy Cheeks

as Sandy Cheeks in Scooby Doo: Belle

FAKE

as Squidward Tentacles in Scooby Doo: Belle

Princess Mindy

as Princess Mindy in Scooby Doo: Belle

SpongeBob SquarePants (character)

as SpongeBob SquarePants in Scooby Doo: Belle

Bubble Bass

as Bubble Bass in Scooby Doo: Belle

Princess Bubblegum

as Princess Bubblegum in Scooby Doo: Belle

Carnage (Cletus Kasady)

as Carnage in Scooby Doo: Belle

Doctor Victor von Doom

as Doctor Doom in Scooby Doo: Belle

Queen of Hearts (song)

as Queen of Hearts in Scooby Doo: Belle