What is the name of Dusty's main rival in Disney's "Planes"?

The name of Dusty's main rival in Disney's "Planes" is Ripslinger.

Ripslinger is the reigning champion of the Wings Across the Globe Rally and the film's principal racing antagonist. He is a sleek, custom-built racing aircraft with green-and-black coloring, orange flame designs, multiple sponsors, and a distinctive contra-rotating propeller. His confidence turns into open hostility when Dusty, an agricultural crop-duster, qualifies for the international race.

Dusty's humble background is central to the rivalry. Other racers initially underestimate him because crop-dusting planes are designed for agricultural work rather than high-speed competition. Ripslinger treats Dusty as an embarrassment to professional racing and repeatedly tries to intimidate him. The conflict becomes more serious when Ripslinger damages Skipper's aircraft during the race, giving Dusty an additional personal reason to challenge him.

A common mix-up is confusing Ripslinger with Dusty's mentor, Skipper, or with the supporting racers Ned and Zed. Ripslinger is the single main rival and villain in the original 2013 film. The movie was produced by DisneyToon Studios and is set in the broader Cars universe.