Which McDonald's character was known for attempting to steal hamburgers?

The Hamburglar was the McDonald's character known for attempting to steal hamburgers.

He was one of the recurring figures in McDonaldland advertising and was characterized by his fixation on hamburgers. Early versions had a more elaborate, somewhat sinister appearance, while later redesigns presented him as a smaller, younger, and more cartoon-like character.

The Hamburglar's role created a simple comic conflict in commercials: he tried to get McDonald's hamburgers, while Ronald McDonald and the other characters thwarted or exposed him. This repeatable story made the character easy for children to recognize.

The Hamburglar is sometimes mixed up with Grimace, whose early advertising role involved milkshakes, or with Captain Crook, who was associated with Filet-O-Fish promotions. All were part of McDonaldland's broader cast, but the hamburger-stealing identity specifically belonged to the Hamburglar.