History ComicBook / BlakeAndMortimer

** In ''The Valley of the Immortals'', a look-alike of [[Franchise/{{Tintin}} Captain Haddock]] appears in the background among the patrons of a seedy bar in Hong Kong. Also, the same book features [[Recap/TintinTheBlueLotus an American businessman named William Gibbons, who explains he owned a factory in Shanghai]] until the city was given back to China. There's also Chang Chong-Chen, as one of the orphans helped by a good samaritan in Hong Kong.

* ContinuitySnarl: In ''The Yellow M'' [[spoiler:Septimus]] claims to have met [[spoiler:an amnesiac Olrik]] (explicitly setting this shortly after ''The Mystery of the Great Pyramid'') some years ''before'' World War 2. Given that ''The Mystery of the Great Pyramid'' [[ContinuityNod references]] ''The Secret of the Swordfish'' multiple times, both of which clearly happen after World War II[[note]]In the war against the Yellow Empire, the U.N. is repeatedly referenced, and London and other cities are said to be "once again" heavily bombed, strongly indicating it is a third, separate conflict[[/note]], this makes no sense at all, no matter which way you cut it.

* BoringButPractical: [[spoiler:We are revealed that Lawrence of Arabia did not died from an accident, but was assassinated by a rogue MI-5 agent named Alister Lawless. While [[UnwittingPawn Blake]] was driving their car, Lawless used a slingshot to hurl a rock at Lawrence's forehead. Lawrence was destabilized and his motorcycle crashed off road, causing his death.]]

* TheAllegedCar: The German archeologist's vehicle is called a survivor from the Heroic Age of Automobiles, in ''Mystery of the Great Pyramid''.

** Olrik is practically the Patron-Saint of this trope.

* GenreShift: While the series is known as belong to a science-fiction and espionage mix, several stories belong to other genres.

** ''The Necklace Affair'' is a capper story without any SpeculativeFiction element.
** Ditto for ''The Francis Blake Affair'' and ''The Oath of the Five Lords'', which are purely mundane espionage thrillers.
** ''The Curse of the Thirty Denarii'' is an ''Franchise/IndianaJones''-like story about a race to gain an archeological artefact. [[spoiler:With an ending involving a similar divine punishment.]]
** ''The Testament of William S.'' is an investigation on a historical mystery, a la ''Literature/DaVinciCode'', with no supernatural elements.

* GoldDigger: The narrator mention that Lady Rowana marries unstable rich men, no doubt to divorce them and take her share of their wealth.

* ContinuitySnarl: In ''The Yellow M'' [[spoiler:Septimus]] is said to have met [[spoiler:an amnesiac Olrik]] (explicitly setting this shortly after ''The Mystery of the Great Pyramid'') some years before World War 2. Given that ''The Mystery of the Great Pyramid'' references ''The Secret of the Swordfish'', which is vaguely implied to happen after World War 2[[note]]The U.N. is referenced, and London is said to be "once again" heavily bombed[[/note]], this makes the relative timing of each stories very hard to decide.

** Olrik's personal plane while serving the Yellow Empire, [[ShapedLikeItself the Flying Wing]] and later, the Flying Wing II. ''The Valley of the Immortals'' shows the Flying Wing III with VTOL capability.

* YoungFutureFamousPeople: A young Queen Elizabeth II makes in apperance in ''The Call of Moloch''. She interacts with both Blake and Mortimer.

* YoungFutureFamousPeople: Teenage Music/JohnLennon and Music/PaulMcCartney appears in a few panels of ''The Voronov Plot'', moments away from first meeting each other.

* YoungFutureFamousPeople: A young Queen of England makes in apperance in ''The Call of Moloch''. She interacts with both Blake and Mortimer.

* ActionGirl: Jessie Wingo in ''The Strange Encounter''.
** Ylang Ti. Despite working in archeology, she has military training and prove herself capable.

* AdaptationDistillation: The animated series.

* KarmicDeath: [[spoiler:Sushil kills princess Gita out of anger using Mortimer's dagger. He then dumbs her body in the river and places the blame on Mortimer. When Ashoka finds out about the truth, he kills Sushil with the very same dagger and dumbs his body in the river.]]

** In ''The Voronov Plot'', Mortimer and Music/JohnLennon cross path in Liverpool. This was before the founding of ''Music/TheBeatles''.

* YoungFutureFamousPeople: A teenage John Lennon appears in a panel of ''The Voronov Plot''.

* ''The Valley of the Immortals, Volume 2'', 2019[[/folder]]

** Nastasia in ''The Voronov Plot''. Ten years ago, Blake convinced her to become a mole after he revealed to her that [[MakeItLookLikeAnAccident her father didn't die from a car accident, but from an assassination carried out by the KGB.]]

* ReverseMole: [[spoiler:Nastasia, a Soviet scientist, was working for Blake. The MI-5 revealed to her that her father was working for them and her parents died in one of Stalin's fake accident. Learning the truth, she switched sides and has secretly been worked for the MI-5 for 10 years.]]
** [[spoiler:Kisin, a barbarian warrior in ''Atlantis Mystery'' join forces with the heroes after they save his life, having already good reasons to hate the barbarians after Olrik sent his brother to his death.]]

** The Valley of Immortals in China is guarded by dragons, who actually look like giant-sized Archaeopteryx with more reptilians features.