* AscendedFanon: The series initially didn't have an official title, but was referred to by everyone as "the Alex Rider books". The 2010 rebranding has officially adopted "Alex Rider" as the series title.
* ContestWinnerCameo: ''Ark Angel'' and ''Scorpia Rising'' both featured gadgets designed by competition winners (the sleeping-gas-exhaling/exploding inhaler and the [[spoiler: Hat Nav, which never actually got used]]).
* HilariousInHindsight is caused when you see Alex, played by Alex Pettyfer, stood behind a giant label '4' in Cornwall. [[Literature/IAmNumberFour He is Number Four]].
* TeasingCreator: AnthonyHorowitz has indulged in this on creation; he teased two plot points from ''Scorpia Rising'', namely that one of the villains in a previous book didn't really die and that Smithers had a big secret, before ''Crocodile Tears'' was even written.