Classic Costumes:
* The Devil: This is probably Bart's most iconic Halloween costume, appearing in the episode "The Devil Wears Nada."
* A Vampire: He also donned a classic vampire costume in the episode "Treehouse of Horror."
* A Ghost: This is a simple but effective costume that Bart has worn on multiple occasions.
* A Spider: This costume appears in the episode "The Boy Who Knew Too Much," where Bart is dressed as a spider for a school play.
More Unique Costumes:
* The Radioactive Man: Bart dressed as the superhero Radioactive Man, complete with a cape and a radioactive symbol, in the episode "Radioactive Man."
* A Skeleton: This costume appears in the episode "Treehouse of Horror V," where Bart is dressed as a skeleton and terrorizes the neighborhood.
* A Ninja: In the episode "Bart the Lover," Bart dresses up as a ninja for a school play.
* A Clown: This costume appears in the episode "Treehouse of Horror VI," where Bart is dressed as a clown and terrorizes the neighborhood.
* Homer Simpson: In the episode "Treehouse of Horror VII," Bart dresses up as his father, complete with a donut and a beer belly.
* A Werewolf: In the episode "Treehouse of Horror XII," Bart dresses up as a werewolf and terrorizes the neighborhood.
Other notable costumes:
* A "Bartman" Costume: Bart has donned his own superhero persona costume with a "Bartman" mask and cape.
* A Police Officer: In the episode "Bart's Dog Gets a Bone," Bart dresses up as a police officer for a school play.
* Various Animals: Bart has also dressed up as various animals, including a cat, a dog, and a monkey.
This is just a small sample of the many Halloween costumes Bart has worn over the years. He is known for his creative and often mischievous choices, making him a classic Halloween icon.