Captain Crook was the McDonald’s mascot created in 1971 as a pirate associated with the Filet-O-Fish.
Captain Crook was part of the McDonaldland character group, and his pirate theme connected him with seafood imagery. His role helped McDonald’s give the Filet-O-Fish a distinct personality within advertising rather than presenting it only as another menu item.
The character wore pirate clothing and spoke in a stylized manner. He appeared alongside Ronald McDonald and other fictional residents during the period when McDonaldland was a major part of the company’s youth-oriented branding.
Captain Crook is often confused with the Hamburglar because both were mischievous-looking male characters. Their advertising roles were different: the Hamburglar was associated with stealing hamburgers, while Captain Crook was linked to the Filet-O-Fish. That product connection is the key distinction.