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Bob Arnold is the corrupt, former congressman for Springfield's State. He is the main antagonist of the Simpsons episode, Mr. Lisa Goes to Washington. At first, he seemed like a decent guy, as evidenced by Moe and Barney's opinion of him, and even Lisa's. However, prior to Lisa's first encounter with him, he was talking to a lobbyist representing the Timber Company about tearing down Springfield Forest.

He was voiced by Hank Azaria.


Bob Arnold revealing evil nature

After her outstanding speech, Lisa went to meet Congressman Arnold himself and was very proud to be with someone like him, but only until shortly after he heard him talking in secret with another man so that, in return for a bribe, The forests of Springfield would be cut.  

To his disappointment, Lisa, who was participating in a contest to give speeches about how good the country was, decided to change what she was going to say and talk about corruption in the United States, also revealing what she heard from Bob Arnold. 

Leaving her perplexed to those present, including her own family. Shortly after the speech, the FBI arranges a sting operation and Bob Arnold is arrested, being found guilty of his actions and expelled. He becomes a born again Christian while in prison.


Lisa, you're a doer, and who knows, maybe someda you'll be a congressman or a senator. We have quite a few women senators, you know.
~ Bob Arnold
Only two. I checked.
~ Lisa Simpson



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Springfield Republican Party
Mr. Burns | Birch Barlow | Lindsey Naegle | Count Dracula (The Simpsons: Tapped Out) | 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 | Nicky Bluepants Altosaxophony | Joey | Dante Calabresi Sr. | Dante Calabresi Jr. | Primo | Shotgun Pete

Environmental Protection Agency
Russ Cargill

Globex Corporation
Hank Scorpio | Miss Goodthighs

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Agnes Skinner | Artie Ziff | Baby Gerald | Constance Harm | Dolph Starbeam | God | Hans Sprungfeld | Herman Hermann | Itchy | Jessica Lovejoy | Jimbo Jones | Kearney Zzyzwicz | Matt Groening | Mr. Largo | Nelson Muntz | Patty & Selma Bouvier | Senator Mendoza | Snake Jailbird | Space Mutants | Wainwright Montgomery Burns | Gina Vendetti

Treehouse of Horror
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Guest Star Characters
Simon Cowell | Will Wright

Other Characters
Adil Hoxha | Adolf Hitler | Andy Hamilton | Bart Simpson's Creatures | Blue-Eyed Man | Bob Arnold | Captain Mordecai Barrows | Cesar & Ugolín | Chett Englebrick | Cooder | Comic Book Guy (Brick Like Me) | Devan & Quenley Woosterfield | Dexter Colt | Dwight Diddlehopper | Francine Rhenquist | Frank Grimes, Jr. | French Chef | Glamorous Godfrey | Howard K. Duff VIII | Ironfist Burns | Jack Crowley | Jack Lassen | Julia | Kindergarten Teacher | Larry Kidkill | Lucille Botzcowski | Lyle Lanley | Les Moore | Mav & Portia | Molloy | Movementarians | Mr. Dirt | Nigel Bakerbutcher | Officer Krackney | Professor Werner Von Brawn | Rex Banner | Robotic Richard Simmons | Shadow Knight | Stanley DeGroot | Stubborn Ape | The Leader | Jay G