In the film, Dr. David Q. Dawson is a surgeon who returns home to London, England after military service in Afghanistan. After he hops off his carriage, Dawson comes across a little girl mouse named Olivia Flaversham, crying her eyes out about her father, Hiram, being captured by Fidget, sidekick to the dastardly Professor Ratigan. Feeling very sorry for the young mouse, he escorts her to Baker street as quickly as possible. He is surprised by Basil's strangeness, but soon catches on to his personality. He later becomes Basil's assistant and the two gentlemen become lifelong associates after defeating Ratigan.
Dawson made a few cameo appearances in the television series House of Mouse. In the episode "Donald's Lamp Trade", Dawson nearly becomes a victim of Ratigan's mouse trap, but was saved by Basil.
- Dr. Dawson uses Daffy Duck's catchphrase, "You're despicable!" when he and Basil are tied up in a giant mouse trap by the dastardly Padriac Ratigan.
Media: The Great Mouse Detective
Characters: Basil of Baker Street | David Q. Dawson | Padraic Ratigan | Fidget | Toby | Olivia Flaversham | Hiram Flaversham | Mrs. Judson | Miss Kitty Mouse | Miss Kitty Mouse's twin sisters | Ratigan's thugs | Felicia | Bill the Lizard | Bartholomew | Sherlock Holmes | John Watson | Queen Mousetoria | Rat Trap Female Patron | Lady Mouse
Other: Darkwing Duck