Ever dependable, Alfred's frequently humorous remarks make him a favorite with fans. While his origin story is always different (including a history as a British Intelligence agent, and/or an actor, and so on) he has been a very loyal and likeable character. The man who does the work behind the scenes, he is known to be much smarter and more capable than he appears. He is quite intelligent and also has extensive medical knowledge.
More than a butler; Alfred is somewhat of a father figure as well.