Road Runner is the fastest bird on Earth, and he is always one step ahead of the ravenous Wile E. Coyote. The only thing Road Runner ever says is "Meep meep!"
Road Runner always has a plan to get Wile E. Coyote off of his back. He also stars in his and Wile E's own shorts. He always gets the upper hand due to his fast speed and the disfuntional Acme products that Wile E. always order. For instance, in A Zipline in the Sand Road Runner uses speed to break away from Wile E.'s wrath.
- Silent But Deadly was the first time Road Runner has fought Wile E. Coyote. This is indicative of Road Runners heavily altered personality as he is now not only much more aware of the Coyotes schemes but activley, intentionally and at times maliciously attempts to foil them at the expense of the coyote. This is a relativly large change in personality as in the past the Road Runner has never attempted to hurt the coyote and has almost always been shown to be ignorent to his attacks leaving bad luck and the coyote's own incompetence to foil him.
- Road Runner must be a expert on A.C.M.E technology to be able to foil Wile E. Coyote's plans.