Mayor McCheese is the mayor of McDonaldland, the magical world seen in McDonald's commercials. He has an enormous cheeseburger for a head. He is voiced by Howard Morris and later Bob Joles, both basing the voice off of Ed Wynn.
Aside from his apparent cheeseburger head. He is seen sporting a top hat, a diplomat's sash, and a pair of pince-nez spectacles, he is the bumbling, giggly, somewhat incompetent mayor of McDonaldland based on H.R. Pufnstuf. While he served as a minor character, he was very popular.
Lawsuit and Disappearance
While McDonaldland is currently phased out altogether, Mayor McCheese was nixed years before due to a lawsuit made by H.R. Pufnstuf creators Sid and Marty Krofft who said McDonaldland itself was a ripoff of H.R. Pufnstuf. After much discussing, McDonaldland remained but most original characters, including Mayor McCheese, who, coincidentally, was based on Pufnstuf. McCheese made some of his last commercial appearances in the late 70's and early 80's. He was, though, seen in a cameo role in the VHS series "The Wacky World of Ronald McDonald".
Though, the character was minor. Following the lawsuit, Mayor gained popularity, from petitions to bring him back to the commercials to blogposts talking of why characters like him disappeared.