- Michael Keaton is one of the actors to portray characters for both Marvel Studios and DC Entertainment. He portrayed Bruce Wayne/Batman in Batman and Batman Returns.
- Michael Keaton is one of the actors to portray characters for both Marvel Studios and Pixar, both of which are owned by Walt Disney Pictures. He voiced Chick Hicks in Cars and Ken in Toy Story 3.
- Michael Keaton has previously worked with Robert Downey, Jr. in Game 6.
- Michael Keaton's real name is Michael Douglas but uses a stage name (named for his affinity for comedic actor Buster Keaton) due to there being another well-known actor with the same name.