Cow Zero

Cow Zero acquired his name from being the very first cow to be featured and reviewed by Josh's Cow Reviews. He manifests as a clip-art graphic with a fake transparent checker-board background, used to allure visitors to the host site in an attempt to find the transparent version, but instead to be abducted and trapped inside the web-page. It is for this reason that Cow Zero is said to have a threatening aura.

In Cow Review
Cow Zero was the first cow to be featured on Cow Review. It appeared on season 1 episode 1 with Josh making such observations as: It earned a rating of 3/10 cows, with Josh giving such reasons as:
 * It seems like a male cow because of its lack of udders.
 * It seems to have been mutilated and doesn't have any genitalia.
 * He likes this cow.
 * How is it going to breed?

In Fan Media
Cow Zero made an appearance in a fan-made animated version of Cow Review - S1 E1 entitled josh's cow review FAN ANIMATION. In this adaptation by mikey CARTOONS, Cow Zero is depicted in a multitude of forms, including:
 * A sheet of paper with a drawing of his original clip-art form.
 * A stiff 3D render.
 * A hopeless romantic.