Which McDonald's character promoted the Filet-O-Fish sandwich in McDonaldland?

Captain Crook promoted the Filet-O-Fish sandwich in McDonaldland.

Captain Crook was a pirate-themed McDonald's character associated with the Filet-O-Fish. His role connected a specific menu item with a memorable personality, helping the product stand out in children's advertising.

The character belonged to the same fictional cast as Ronald McDonald, Grimace, the Hamburglar, and Mayor McCheese. McDonaldland campaigns used these figures to assign recognizable traits and stories to different parts of the brand.

Captain Crook is easily confused with the Hamburglar because both were presented as mischievous characters. The key distinction is their branded association: Captain Crook was linked to the fish sandwich, while the Hamburglar's recurring theme involved stealing hamburgers.