During an escape attempt, Pop Warner's Son nearly broke Officer Mulligan's neck, but he was saved by Dick Tracy.
- There have been several police officers referred to by the name "Mulligan" in the Dick Tracy comic strip. As some of them are shown to have died, they are certainly not all the same person.
- In addition to Mulligan, there have also been several officers identified by the names Gilligan, Milligan, and Murphy.
- In gaming, a "Mulligan" is when a player gets a second chance to attempt something, also called a "do-over". This may have been a joke on the part of the creators.