I think there might be a fictional character who such a person might be named after, but I can't place him. There are several other cases where a character-type is named after a stereotypical fictional character:
- He's a bit of a Walter Mitty, always living in a dream-world.
- He was a real Mr McGoo, if ever there was an accident to cause, he'd cause it and not notice a thing.
- He was something of an Elmer Fudd, always hunting something.
- ... etc.
Wikipedia will tell you about these characters. I'll try to remember the appropriate one.
Student or Learner