Roadrunner

Road Runner is the fastest bird on Earth, and he is always one step ahead of the ravenous Wile E. Coyote. " Meep, Meep!"—Road Runner's usual catchprase.

Summary
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 the CGI short, A Zipline in the Sand, Road Runner uses speed to break away from Wile E.'s wrath.

Trivia

 * 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 ignorant to his attacks leaving bad luck and the coyote's own incompetence to foil him.
 * Road Runner has had many designs on The Looney Tunes Show. He has appeared on merchandise with his head and top feathers being colored plum along with his tail. He has also appeared in the CGI Shorts but with a purple head and top feathers along with a blue tail. He seems to have a different model in the show when he appeared in Rebel Without a Glove, his head and top feathers were dark blue. His tail was still blue though.* He has only appeared once outside of a CGI Short, although Wile E. Coyote has appeared three times outside of a CGI Short.