Fender Pinwheeler is a Rusty and one of the first robots Rodney meets in Robot City.

He tries to scam
Rodney along with Diesel by taking his picture and attempting to charge him $50 for it. He later becomes Rodney's best friend after trying to steal his foot. Rodney later fixes his neck, and Fender takes him in to live with him at Aunt Fanny's boarding house. He has a sister named Piper, with whom he has a typical sibling rivalry relationship with. During an unpleasant visit to the Chop Shop, Fender loses his torso. After finding a replacement and putting it on, he discovers it is a female's torso, complete with high heels and a skirt. He is seen with this torso for the rest of the movie.