- Acting for Two: In the 1966 film, Clive Revill plays both Sheikh Abu Tahir and Gabriel's accountant McWhirter.
- Ashcan Copy: The 2004 direct-to-DVD film My Name Is Modesty: A Modesty Blaise Adventure is the cinema equivalent, a movie made quickly and cheaply to satisfy a contractual obligation and let the studio hold on to the film rights.
- Author Existence Failure: The original artist, Jim Holdaway, dropped dead suddenly in 1970, causing a lengthy period of rotating artists that lasted for much of the rest of the strip's run until Romero took over full-time.
- Creator Killer: The 1966 film killed off Monica Vitti's international career just as it was starting. From then on, she restricted her efforts to Italy.
- Early Draft Tie-In: The first novel is a novelisation of O'Donnell's script for the 1966 film, without the major subsequent changes of the finished movie.
- Fake Brit: In the 1966 film, the Minister is played by Canadian actor Alexander Knox, with a Scots accent.
- Name's the Same: Two years before the actor Michael York (of Cabaret, The Three Musketeers and Austin Powers fame) became a household name, the strip featured an actor friend of Modesty and Willie's named Michael York who helps them pull off a deception and expose The Mole.
- What Could Have Been: Peter O'Donnell floated Barbara Steele as Modesty and Michael Caine as Willy.
- What The Hell, Casting Agency?: The general reaction to the casting of Monica Vitti, a blonde Italian known for playing neurotic or languid middle-class types in arthouse movies, as the wiley, raven-haired, EXTREMELY British Action Girl that Modesty is in the comics.
Trivia / Modesty Blaise