* A nickname: Someone might be called "Happy Larry" in a specific context or community, but there's no famous person with that nickname.
* A fictional character: It could be a character from a book, movie, TV show, or video game that you're thinking of. If you can provide any more context, I might be able to help identify it.
* A misunderstanding: You might be misremembering the name or title.
Please provide more details so I can assist you better.