- “I made a Pigeon-rat.”
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 consigned 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 also did experimental surgery to prepare for his eventual reattachment to Bart, and created a "Pigeon-Rat" in the process. The family later learned, however, that Bart was actually the evil twin, as Hugo's scar from when he and Bart separated was on the wrong side. Bart then took Hugo's place in the attic and was fed fish heads, while Hugo moved downstairs to live with the family.
- In "Brother's Little Helper", when Bart was driven into paranoia due to Focusyn and went berserk, his facial appearance strongly resembled Hugo Simpson.
- He is likely named after his, Bart, Lisa and Maggie's great-great-great uncle Hugo Simpson I, whom he and Bart heavily resemble.
- He bears a resemblance to Quasimodo, the deformed bellringer from the novel The Hunchback of Notre-Dame, which was written by Victor Hugo.
The Simpsons: Hit and Run
The Simpsons Characters
|The Simpsons and relatives|
| Homer Simpson • Marge Simpson • Bart Simpson • Lisa Simpson • Maggie Simpson|
Santa's Little Helper • Snowball II • Abraham Simpson • Patty Bouvier • Selma Bouvier • Mona Simpson • Jacqueline Bouvier • Ling Bouvier • Herb Powell
|Jasper Beardly • Comic Book Guy • Barney Gumble • Maude Flanders • Ned Flanders • Professor Frink • Gil Gunderson • Julius Hibbert • Lionel Hutz • Helen Lovejoy • Reverend Timothy Lovejoy • Captain Horatio McCallister • Akira • Hans Moleman • Marvin Monroe • Bleeding Gums Murphy • Apu Nahasapeemapetilon • Mayor Joe Quimby • Dr. Nick Riviera • Agnes Skinner • Cletus Spuckler • Disco Stu • Squeaky-Voiced Teen • Moe Szyslak • Sam and Larry • Kirk Van Houten • Luann Van Houten • Clancy Wiggum • Eddie • Lou • Crazy Cat Lady • Lindsey Naegle • Cookie Kwan • Wiseguy • Brandine Spuckler • The Yes Guy • Sanjay Nahasapeemapetilon • Blue-haired Lawyer • Judge Roy Snyder • Rich Texan • Luigi Risotto • Old Jewish Man • Mrs. Glick|
|Itchy & Scratchy • Kent Brockman • Krusty the Clown • Troy McClure • Sideshow Mel • Rainier Wolfcastle | Arnie Pye • Radioactive Man • Duffman • Bumblebee Man • Bill and Marty • Drederick Tatum • Mr. Teeny • Scott Christian • Booberella • Gabbo • Lurleen Lumpkin • Celebrities|
|Springfield Elementary School faculty and students|
|Superintendant Chalmers • Seymour Skinner • Edna Krabappel • Elizabeth Hoover • Groundskeeper Willie • Otto Mann • Lunchlady Doris • Dewey Largo • Dr. J. Loren Pyror • Milhouse Van Houten • Ralph Wiggum • Nelson Muntz • Martin Prince • Rod Flanders • Todd Flanders • Sherri and Terri • Wendell Borton • Database • Jimbo Jones • Kearney Zzyzwicz • Dolph Starbeam • Üter Zörker • Janey Powell • Lewis • Richard • Bashir bin Laden|
|Springfield Nuclear Power Plant|
|Charles Montgomery Burns • Waylon Smithers • Carl Carlson • Lenny Leonard • Charlie • Blinky|
|Snake Jailbird • Kang & Kodos • Herman • Sideshow Bob • Fat Tony • Frankie the Squealer • Johnny Tightlips • Legs and Louie|
|The Simpsons • The Bouviers • The Flanders • The Van Houtens • The Wiggums|
|Fictional characters • One-Time Characters • LGBT characters • Parodied celebrities • Animals|