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Little Lisa Simpson. You really made something of yourself after I made mincemeat of your brother. Come to thank me?
~ Bob harrasing Professor Lisa Simpson.
Oh, really? Split personalities? Trope alert! Call the first thought police!
~ Bob mocking her, after Lisa reveals that her alter ego committed the murders.

Robert Underdunk Terwilliger Jr. better known as Sideshow Bob is the overarching antagonist of the The Simpson's Treehouse of Horror XXXIV in the segment "Ei8ht".

He is an alternate version of his original counterpart who successfully murdered Bart Simpson in the episode "Cape Feare", which would play a role in driving his sister, Lisa, insane.

Like his mainstream counterpart, he was voiced by Kelsey Grammer, who voiced his Treehouse of Horror XXVI version in the same series, Stinky Pete in Toy Story 2, Rothbart in Barbie of Swan Lake, Harold Attinger in Transformers: Age of Extinction and Hunter in Storks.

Background[]

His past is presumed to be identical to that of his mainstream counterpart's up to the episode "Cape Feare". Instead of being foiled due to Bart outsmarting him, he immediately killed Bart after realizing the latter's trick to stall for time, which traumatized Lisa Simpson. Afterward, he was sent to prison where he remains for the next thirty years.

Synopsis[]

Bob was asked by Lisa, who became a Professor for Criminal Psychology, for any clues in regards to her case. He only gave cryptic idea to annoy her, but she eventually figure out the killer’s targets to firstborn child. When Bob returned to his cell, he encountered Lisa, who is sharing the same cell thanks to Maggie’s help and is the killer. Bob saw that she has a split personality and learned about her motive. Bob is horrified that he will be killed by bad Lisa, who silenced good Lisa.

Gallery[]

Images[]

Videos[]

Trivia[]

  • Unlike his main version, who always escapes from prison, this Sideshow Bob never left prison after killing Bart Simpson in 1993, remaining locked up until his murder in 2023. Most likely, this may have to do with the fact that whereas his main version has never actually succeeded in killing anyone, this Bob did kill Bart, so the authorities most likely placed him under maximum security to prevent him from harming anyone else ever again, plus Bob most likely didn't even try to escape due to having achieved his goal to kill Bart.
    • By extension, Bob's life imprisonment indirectly means that his marriage to Francesca Terwilliger and their son Gino's birth didn't happen in this continuity, as Bob moved to Italy seasons after the events of "Cape Feare". In addition, his arrest may have led his brother Cecil to desist from seeking vengeance against him for being chosen Krusty the Clown's aide, as Bob pretty much ruined his reputation by killing Bart here.
  • In the opening scene, the artstyle is accurately changed to fit "Cape Feare", even using the 4:3 ratio until Bob realizes Bart's ploy. This was praised by fans for keeping the scene accurate to the original episode.

Navigation[]

               The Simpsons Logo Villains

Springfield Republican Party
Birch Barlow | Lindsey Naegle | Count Dracula | Blue-Haired Lawyer | Waylon Smithers

Terwilliger Family
Cecil Terwilliger | Dame Judith Underdunk | Francesca Terwilliger | Gino Terwilliger | Robert Terwilliger, Jr. | Robert Terwilliger, Sr.

Springfield Mafia
Fat Tony | Fit Tony | Johnny Tightlips | Legs | Louie | Don Vittorio D'Maggio | Frankie the Squealer | Johnny the Snitch | Ned Flanders Sr. | Nicky Bluepants Altosaxophony | Joey | Dante Calabresi Sr. | Dante Calabresi Jr. | Primo | Shotgun Pete

Burns Family
Mr. Burns | Clifford Burns | Wainwright Montgomery Burns | Ironfist Burns

Recurring Characters
Agnes Skinner | Artie Ziff | Baby Gerald | Clancy Wiggum | Constance Harm | Dolph Starbeam | Gina Vendetti | God | Hans Sprungfeld | Herman Hermann | Itchy | Jessica Lovejoy | Jimbo Jones | Jack the Ripper | Kearney Zzyzwicz | Mayor Quimby | Mr. Largo | Patty & Selma Bouvier | Rich Texan | Senator Mendoza | Shauna Chalmers | Snake Jailbird | Space Mutants

Treehouse of Horror
Homer Simpson: III | V | XXII | XIV | XIX | XVIII | XXV | XXVII | XXXIV | The Blob | The Fat in the Hat | Homerzilla | Homer's Clones

Marge Simpson: Witch Marge | XVIII

Bart Simpson: The Raven | II | IV | VII | XVI | XX | XXV | XXXI | XXXII

Lisa Simpson: XXIX | XXXIII | XXXIV

Maggie Simpson: IX | XXX | XXXIV

Mr. Burns: II | XVI | XXVII | XXXI | XXXIII | XXXV | Count Burns | Burnsiverse | Lord Montymort

Waylon Smithers: II | Slithers

Moe Szyslak: XX | Moe-Looking Satan | V | XXV

Sideshow Bob: XXVI | XXXIV

Others: Bart (Fly) | Zombies | Gremlin | Groundskeeper Willie | Jonathan Frink Sr. | Kang and Kodos | Killer Toupée | King Snorky | Killer Krusty Doll | Lard Lad | Muttonchop Murderer | French President | Ned Flanders | Seymour Skinner | Doris Freedman | Edna Krabappel | The Devil | Dr. Julius Hibbert | Billy the Kid | The Grand Pumpkin | The Mutants | Witch Patty & Selma | Rachel | Munchers | Death | The Pookadook | Metaluna Mutant | Steve Johnson | The Collector | Universal Monsters | Ultrahouse 3000 | Pazuzu | The Other Simpsons Family | Bart's Toys | Krusto D. Clown | Lenny Leonard | Carl Carlson | Bad Dream House | Count Dracula | Itchy and Scratchy | Artie Ziff | Snake Jailbird | Jelly Monster | Clancy Wiggum | Gary Chalmers | Mopey Mary | Gypsy | Bart's Treehouse | Political Monsters | Denim | Springfield Fire Department | Luann Van Houten

Other Characters
Adil Hoxha | Adolf Hitler | Andy Hamilton | Baby Button Eyes | Bart Simpson's Creatures | Beautiful Bart | Blue-Eyed Man | Bob Arnold | Captain Mordecai Barrows | Cesar & Ugolín | Chett Englebrick | Clownface | Cooder | Comic Book Guy (Brick Like Me) | Devan & Quenley Woosterfield | Dexter Colt | Dwight Diddlehopper | Environmental Protection Agency (Russ Cargill) | Frank Grimes, Jr. | Francine Rhenquist | French Chef | George H.W. Bush | Glamorous Godfrey | Globex Corporation (Hank Scorpio, Miss Goodthighs) | Hell's Satan | Homer Gimplet | Howard K. Duff VIII | Hypnotoad | Itchy & Scratchy Bots | Jack Crowley | Jack Lassen | Jay G | Joan Bushwell | The Jockeys | Julia | Kostas Becker | Larry Kidkill | Lucille Botzcowski | Lyle Lanley | Les Moore | Jim Hope | Mayor of Albuquerque | Mav & Portia | Michael De Graaf | Molloy | Movementarians | Mr. Dirt | Ms. Cantwell | Ms. Kelp | Nigel Bakerbutcher | Officer Krackney | Pa MacWeldon | Professor Werner Von Brawn | Rex Banner | Robotic Richard Simmons | Rover | Siegfried Blaze | Shadow Knight | Sparklemon | Stanley DeGroot | Stonecutters (Homer Gimplet)| The Leader | William Shakespeare | Paolo Paoletti

Guest Star Characters
Will Wright | Taika Waititi

Video Games
Simpsons Arcade
Mr. Burns | Mr. Smithers | Hench Dogs | Robot Burns

The Simpsons: Hit and Run
Agnes Skinner | Kang and Kodos | Mr. Burns | Patty and Selma Bouvier | Snake Jailbird | Springfield Mafia (Fat Tony & Louie) | Wasp Cameras | Waylon Smithers | Zombies

The Simpsons Game
Matt Groening | Kang and Kodos | Chocolate Rabbits (White Chocolate Rabbit) | Security Guards (The Simpsons Game) | Riot Cops | Tree Loggers | Jimbo Jones | Dolph Starbeam | Kearney Zzyzwicz | EA Executive | Stubborn Ape | King Snorky | Lard Lad | Mr. Burns | Waylon Smithers | Sideshow Bob | Selmatty | Itchy | God

The Simpsons: Tapped Out
Mr. Burns | Russ Cargill | Frankie the Squealer | Sven Holly | Evil Homer | Bandits | Count Dracula | Rich Texan | Fernando Vidal | Grampasaurus | Itchy & Scratchy Bots

See Also
Futurama Villains | Disenchantment Villains

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