Which McDonald's mascot was known for saying “Robble robble” in later advertising?

The Hamburglar was the McDonald's mascot known for saying “Robble robble” in later advertising.

The phrase became a distinctive vocal mannerism for the character, reinforcing his role as a playful hamburger thief. It was not a conventional sentence, but a repeated sound associated with the Hamburglar's mischievous identity in later versions of the advertising character.

The Hamburglar had appeared in McDonaldland advertising before this later speech style became familiar. His costume, body shape, and personality changed over time, which is why older and newer commercials can present noticeably different versions of him.

Ronald McDonald, Grimace, and Birdie the Early Bird were also McDonald's mascots, but they had different character roles and visual identities. “Robble robble” is specifically linked with the Hamburglar and should not be confused with the “ba da ba ba ba” musical hook used for the “I'm Lovin' It” campaign.