Namesake

The FBI has nicknames for some of America's most wanted criminals: and it's a Marketing tool. Names like the Miss Piggy Bandit, the Uncle Fester Bandit, and Attila the Bun (whose partner may or may not be the Cookie Monster Bandit!) helps get the media - and the public - interested in helping identify the wrongdoers. Easier to ring up and dob in Miss Piggy rather than "the person who held up ..." - you get the idea. Nicknames are not new of course: remember Billy the Kid and Jack the Ripper?