Shortly after their birth they were separated by dr.
Simpsons halloween twin living in the attic.
From season 8 episode 1 treehouse of horror vii a halloween special which is divided into three short stories.
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.
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 next morning after they mention this to their parents marge reminds homer to feed the thing.
Hugo simpson is a non canon character and bart s conjoined twin in treehouse of horror vii.
Bart lisa and maggie discovered hugo after they heard strange sounds coming from the attic and after homer spilled the beans about there.
In one of the few treehouse of horrors not based on an existing story this segment introduced hugo bart s conjoined twin brother who was separated from him at birth by the chuckle tastic dr.
He explains that bart has an evil twin named hugo.
Bart stays behind as the others leave to search for hugo but bart realizes that hugo never left the house.