A prototypical version of Bugs Bunny appeared in four cartoons before making his first official appearance in Tex Avery's A Wild Hare. Several published first person accounts, encyclopedic references, and Warner Bros.' own published material describe the inception of the name and of the character. A model sheet by Charlie Thorson describes this prototype character as "Bugs' Bunny" (note the apostrophe) but in most of the cartoons the character is unnamed.