Futurama: Bender's Game (2008)

Defying Professor Farnsworth, Leela borrows the Planet Express Ship to enter a demolition derby after insults from rednecks anger her. Bender finds Cubert and Dwight playing Dungeons & Dragons, but cannot join in since, as a robot, he has no imagination. Bender manages to imagine himself as a medieval knight named “Titanius Anglesmith, fancy man of Cornwood” and enters the game. He becomes lost in his fantasy and goes on a rampage, resulting in his commitment to the Hal Institute for Criminally Insane Robots.

The crew learns that Mom, who controls the world’s only dark matter mine, is restricting the supply to drive up profits. The Professor reveals that while working for Mom, he discovered how to turn dark matter into fuel. The process created two crystals, with Mom keeping one for herself and Farnsworth hiding the other, “anti-backwards” crystal. If the crystals are brought together, they will render dark matter useless. Farnsworth, Fry, and Leela fly to Mom’s mine with the crystal to neutralize the dark matter. Encountering Mom and her three sons, Leela fends off Walt, Larry and Igner, while Farnsworth tries to bring his and Mom’s crystals together; when Farnsworth is at risk of losing the anti-backwards crystal, he swallows it.