Sum 41 | SpongeBob SquarePants (character) | Jerry Seinfeld (character) | Xuanzang (fictional character) | The Sum of All Fears | Sonic the Hedgehog (character) | Player character | Forrest Gump (character) | player character | Noddy (character) | Yeung Sum | Macbeth (character) | Huckleberry Finn (character) | Dolly Varden (character) | Tintin (character) | Thousand Character Classic | The Sum of All Fears (film) | Terminator (character) | Sum Mo Chikan | Rocky Balboa (character) | Prince Caspian (character) | Ophelia (character) | Non-player character | Nikita (Nikita character) | moral character | Mooncat (Childrens TV character) | L'Autre (character) | John Shuttleworth (character) | Donkey Kong (character) | Crash Bandicoot (character) |
Auxiliary types of sums occur in the theory, for example character sums; going back to Harold Davenport's thesis.