She looks very similar to Sandy, except she wears a silver button-up lab coat with four black buttons, black gloves, and a pair of black goggles.
Role in episode
The first place at which SpongeBob and Patrick stop to go trick-or-treating is Sandy's treedome. Sandy appears in a mad scientist outfit and is dubbed under the name Dr. Franken-Cheeks. She, SpongeBob, and Patrick play a guessing game with her jars of horror and she shows them her latest invention: the acorn monster.