Suggestions by @jesselee

Sheldon J. Plankton

as Plankton in Thanksgiving

Randall Boggs

as Randall Boggs in Thanksgiving

Lady Redundant Woman

as Lady Redundant Woman in Thanksgiving

Victoria Best

as Victoria Best in Thanksgiving

Lady Tremaine

as Lady Tremaine in Thanksgiving

Bruce (Finding Nemo)

as Bruce in Thanksgiving

Granny May

as Granny May in Thanksgiving

Sir Hiss

as Sir Hiss in Thanksgiving

Splatter and Dodge

as Splatter and Dodge in Thanksgiving

Hopper (A Bug's Life)

as Hopper in Thanksgiving

Diesel 10

as Diesel 10 in Thanksgiving

Barney the Dinosaur

as Barney the Dinasour in Thanksgiving

Madame Leota

as Madame Leota in Thanksgiving

The Cyclops

as The Cyclops in Thanksgiving

Pain

as Pain in Thanksgiving

Si and Am

as Si and Am in Thanksgiving

Fates

as Fates in Thanksgiving

The Riddler (Edward Nigma)

as The Riddler in Thanksgiving

Mr. Freeze (Dr. Victor Fries)

as Mr. Freeze in Thanksgiving

Harley Quinn

as Harley Quinn in Thanksgiving