| Jeff Benson
| Character Information
Jeff has a large corncob (with the kernels) for a body, it having limbs sprouting out of it. He wears the leaf of the cob like a shirt, and does not have a neck. He also wears a pair of brown shoes and a belt.
Jeff has been shown to be generous, as seen in "The Gripes," when he donates money to a "poor" Gumball and Darwin. But when he (and others) hear about Gumball and Darwin lying to them about this, he joins an angry mob against them.
- "The Castle": He is at the party at the Watterson's house.
- "The Internet": He is one of the drivers involved in a massive pile-up.
- "The Kids": He gets fired.
- "The Extras": His first major role. He is seen with the citizens singing "Just Notice Us."
- "The Gripes": He appears in the mob of citizens donating to the Wattersons.
- "The Law": He appears in the crowd watching the Doughnut Sheriff arrest Felicity.
- "The Shell": He is in the theater audience watching the play.
- "The Butterfly": He can be seen in the Elmore Wings plane.
- "The Oracle": He is one of the many people who want to be the 1,000,000th customer.
- "The Safety": He is part of Darwin's new police force.
- "The Spoiler": He is at the Elmore Cinema.
- "The Return": He is in the audience watching a movie.
- "The Others": He can be seen in the crowd of citizens on the highway.
- "The Check": He is seen working at Darwin's business.
- "The Sale": His second major role. He was going to buy the Robinsons' house, but was scared away by Gumball, Darwin, and Richard.
- "The Parking": He is part of the car pileup.
- "The Romantic": He dances as part of the musical number for Gumball's first clue.
- "The Apprentice": He is seen in the supermarket running away from Gumball and Patrick in a golf cart.
- "The Wicked": He is attacked by squirrels.
- "The Traitor": He is at the cinema again.
- "The Nest": He runs away from the Evil Turtle's babies.
- "The Bus": He is seen in his car.
- "The Misunderstandings": He is seen at the mall talking to people.
- "The Blame": He is at the PTA meeting.
- "The Fury": He is in his car stuck in a traffic jam.
- "The Scam": He is seen chanting to Gumball and Darwin to hunt Gargaroth.
- "The Disaster": He is seen at the mall.
- "The Rerun": He is seen in the mall.
- "The Boredom": He is at the mall.
- "The Choices": He was in the crowd at Nicole's graduation and when she became the president in her flashback.
- "The Code": He is seen in the bus.
- "The Ollie": He laughs at Gumball.
- "The Cycle": He attends prom night in Richard's flashback.
- "The Diet": He watches Richard pop out of the mall fountain.
- "The Sorcerer": He is swallowed by the Troll.
- "The Menu": He is seen in the mall.
- "The Worst": He is seen in a photo as an "Employee of the Month" of the Rainbow Factory.
- "The Nuisance": He is seen in the crowd.
- "The Line": He is one of the people running to the first showing of Stellar Odyssey.
- "The List": He is seen cheering for Gumball and Darwin during a marathon.
- "The Sucker": He is seen inside an airplane.
- "The Vegging": He becomes a mutant and attacks the scientists.
- "The Father" He drives a car.
- "The Cage": He is seen in the crowd cheering for Mr. Corneille.
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- His first name is revealed in "The Check," and his last name was revealed in "The Sale."
- Interestingly, "The Worst" lists his name as "Fenton Benson" on an Employee of the Month plaque. This may simply be an error during production, or a deliberate change to his first name.