Hugo simpson is a non canon character and bart s conjoined twin in treehouse of horror vii.
Simpsons halloween twin living in the attic.
He explains that bart has an evil twin named hugo.
From season 8 episode 1 treehouse of horror vii a halloween special which is divided into three short stories.
In a parody of the hunchback of notre dame and basket case bart lisa and maggie begin to hear strange noises coming from the attic one night.
The thing and i bart discovers he has an evil twin who is living in the.
The two were originally conjoined but were separated at birth.
Bart lisa and maggie discovered hugo after they heard strange sounds coming from the attic and after homer spilled the beans about there being four simpson children as the evil twin hugo had been confined to living in the attic of the simpson home and once a week was given a bucket of fish heads to eat because he was the evil one.
Hugo was deemed too evil for human society so they chained him in the attic where they feed him on fish heads.
The kids spy on homer climbing to the attic feeding fish heads to something.
The next morning after they mention this to their parents marge reminds homer to feed the thing.
Bart stays behind as the others leave to search for hugo but bart realizes that hugo never left the house.