Fender Pinwheeler/Trivia

* Despite Piper often being called in character profiles Piper Pinwheeler, Fender is not referred to by his last name.
* Before the final battle in the film, he somehow lays an egg.
* After Rodney and Bigweld ran Bigweld Industries together, and put in spare parts back at production, it's highly likely they made spare legs for Fender that looked like his real legs, as in the last page of the Robots Movie storybook, he was shown with his correct legs.
* Fender's name used to be Bumper, but he had to change it when he and his family moved into the country.
* Robin Williams' first animated voice since Aladdin and the King of Thieves (1996).
* After Fender steals Rodney Copperbottom's foot, Robin Williams delivers the line "Foot, don't fail me now!", which is similar to the phrase "Feet, don't fail me now!", made famous by Stepin Fetchit.
* Eddie Murphy, John Goodman, Seth MacFarlane, Seth Green, Billy Crystal, Tim Allen, Bruce Willis, Steve Martin, Martin Short, Samuel E. Wright, Larry the Cable Guy, Chris Rock, Jason Alexander, Randy Quaid, Hugh Laurie, Josh Gad, Ben Stiller, Stephen Fry, Steve Carrell, Ricky Gervais and Danny DeVito were considered the role of Fender before Robin Williams was casted.
* Dan Castellaneta (who also replaced Williams as the voice of Genie in The Return of Jafar, and Ramón in the Happy Feet video game) was considered to voice Fender in the Playstation video game. However, in the final game, he has no voice lines.