Adaptational Attractiveness: It is outright stated in Snakehead that Mrs Jones is "not attractive". Compare her appearance in the movie and the graphic novels. Even in earlier novels she was described as "a head shaped like a potato".
The Chess Master: Conducts an epic operation using John Rider to humiliate Scorpia and rescue an VIP hostage
Stuffed In The Fridge: Her death happens entirely because Razim wants to see how much emotional pain it will cause Alex.
Big Fun: He's slightly fat, but he's a very enjoyable guy.
Crouching Moron, Hidden Badass: You think his weight problems hinder him? You'd be right, but he's surprisingly effective at getting rid of the Scorpia team that come his way. And then he's revealed to not even be fat.
Gadget Watch: He gives Alex one in Snakehead that can send out a distress signal.
Nice Guy: Extremely caring for Alex and often holds reservations about putting him in danger, so for that reason he does his best to make sure he's well protected. In Scorpia Rising, he even agrees to go along with Alex's plan to
Pun: A lot of his gadget names, including the 'fan club' and the 'Chamber of Secrets'. This therefore makes him a Pungeon Master.
Sacrificial Lion: Subverted. He's set up to die, but manages to dispose of most of the Scorpia agents sent after him and escapes.
Reasonable Authority Figure: shares this with Mrs Jones in Mi6, by the end of the series he's arguing with Alan Blunt on letting Alex go from employment with Mi6
Shoe Phone: Every single one of his gadgets. He never actually invented a shoe that works as a phone, though.
Chuck Cunningham Syndrome / Demoted to Extra: He disappears after Skeleton Key. He shows up very briefly in Ark Angel and Crocodile Tears, but in both cases he does very little (his involvement in the latter is about half a page that could have been served by another generic MI6 character).
A Father to His Men: And even to members of other intelligence services. This is made prominent in Scorpia Rising when he's utterly horrified about the psychological damage Alex has gone through over the course of the book.
Big Good: While Blunt may be head of MI6, Byrne's a million times more altruistic than he is.
Secret Keeper: For the most part, although he does casually blurt out that Alex is a spy to his older brother. His older brother doesn't particularly care, so it's mercifully not damaging.
What Happened to the Mouse?: He's heard from only once after he's shot in Scorpia Rising, and it's a passing mention. The final chapter never bothers to mention if Alex ever talks to him once he returns from Cairo or meets him ever again, despite Alex having agonised over leaving him to go to America in an earlier chapter.
Antagonists (Big Bads and Dragons)
Disproportionate Retribution: He planned to kill millions of innocent schoolchildren as revenge for the Prime Minister bullying him at school.
Unperson: Because of certain events in his childhood, there are no records of his existence anywhere in the world. It's this trait which makes him good at his job, since it's much harder to track him down.
Wouldn't Hurt a Child: He has no qualms about working for an employer intending to kill millions of children, but objects to directly killing Alex and Sabina. Though this may be because Yassen worked with Alex's dad.
Disproportionate Retribution: He arranged the death of a journalist who objected to the violence in his video games, and later told Alex he planned to kill him before he found out he was a spy, on the basis that Alex had done too well at what was supposed to be an extremely difficult game.
Well-Intentioned Extremist: One way of looking at his ideals. He has animal testers, illegal whalers and landmine sellers killed, and launches a nuclear strike on several countries to stop productions of illegal drugs.
Death by Irony: He has a fear of heights, and ends up being knocked off a hot air balloon from a height of 100 metres. To add insult to injury, he gets knocked off by a fireball that Alex sets off by severing the balloon's propane burner. How did he do that? By cutting through it with a sword Nile had thrown at him.
Throwing Your Sword Always Works: When he kills a researcher, though Averted Trope when he later tries to kill Alex because he was crippled by his fear of heights. Though these are swords that are meant to be thrown, not normal swords.
Too Dumb to Live: Pulls a gun on Zeljan of all people and gets assassinated for his trouble.
Wrong Genre Savvy: He's Genre Savvy in the sense that he knows retiring from Scorpia just leads to early death. Unfortunately, he misinterprets a comment from Razim as a suggestion that they should kill him, and ends up giving them reason to. Probably what Razim had intended, of course.
Faux Affably Evil: Tries to be polite but cracks of his true personality show over time.
Would Hurt a Child: He arranged for his own son to be kidnapped as a Force Three stunt, and even arranged for them to cut his finger off just so the threat would seem credible. He shoots him later, but that is an accident (he's aiming for Alex). Still doesn't change anything, though.
Crazy-Prepared: He's fully aware that one of his fellow board members might be considering avoiding the usual punishment for retirement by gunning them down when Scorpia begins to hit rock bottom, so he has snipers placed on the root of the Scorpia riverboat to take them out. This is how Kroll dies.
Man Behind the Man: In Snakehead and Scorpia Rising, for Winston and Razim respectively. He comes up with plans, the other Scorpia executives carry them out.
Major Winston Yu
Affably Evil or Faux Affably Evil: At times he's legitimately both at once. Neither trope changes the fact that he's willing to destroy an entire island and devastate the Australian coast with a tidal wave, killing millions of people.
Big Bad Friend: He murders his best friend, to whose son he is godfather, along with his wife, to prove he's loyal to Scorpia. He goes on to more or less ensure his godson will be killed by telling Major Yu about ASIS' plot and removing the battery from the homing device MI6 gives him.
Co-Dragons: Him and Bill to Winston. Ash plays a much larger role, however.
The Resenter: An interpretation of why he defected to Scorpia, he may have just hated how John Rider never helped him out after Malta (albeit, that was due to his own mistake which got several MI6 agents killed or wounded.
Driven to Suicide: Possibly; it's known that he kills himself, but why he does is never explained (it's suggested that he was following orders from Yu after Alex escaped, which given the fate of de Wynter earlier seems likely).
Faux Affably Evil: Remains polite even after threatening Alex with a slow and painful death.
We Care: His charity exists purely to gain whatever profit it can from the disasters by keeping as much of the donation money as it can. Perhaps taken to its extreme when he starts engineering disasters to get people to donate.
Dangerously Genre Savvy: Doesn't tell anybody else what his plans are beyond what they need to know (though unfortunately Gunther gives most of it away anyway), and has several backups in place for his plans to achieve the result closest to what he needs if something goes horribly wrong.
Kids Are Cruel: He was this as a child, strangling his dog and ratting out his parents to Saddam Hussein alongside his sister. Then he wanted to join the police force and start killing. The officer who was doing the whole "you did the right thing" talk to him wanted to gun him down there and then.
Knight of Cerebus: The series was never light to begin with, but Razim takes it into its darkest moments pretty much single handedly.
Self-Made Orphan: Indirectly; he rats his parents out to Hussein, but doesn't do anything to them himself.
Spanner in the Works: He expects Jack to steal a knife when she and Alex are dining with him, as it's part of his plan to cause Alex emotional pain. Alex stealing a cigarette packet at the same meal is not part of his plan.
The Sociopath: He is characterized by a complete lack of emotions or empathy.
The Unsmile: At the end when he's fallen into the pile of salt and is pleading with Alex to throw him a rope. It's described as looking more like a hideous grimace than anything.
Failed a Spot Check: Alex's plan to escape would have failed if he hadn't noticed the cigarette packet hadn't been there before Alex got into the van.
Fallen Hero: It is suspected that this happened after leaving his hospital treatment. The suspicions are true.
Smug Snake: He tells Alex more or less the whole plan.
Bad Boss: To Yassen, and he happily admits it. He forces the kid to taste his meals for poison, treats him like a slave and happily lets his son abuse him.
Better to Die than Be Killed: Inverted. Upon realising he's doomed, he has no problem with Yassen killing him, but refuses to commit suicide in front of him.
Corrupt Corporate Executive: An immensely wealthy businessman who has contacts with the mafia, politicians and the police, and has apparently killed who knows how many people to get to his current position. He also cuts corners at a certain pesticide factory, indirectly causing the events of Russian Roulette.
Evil Cripple: Becomes one after surviving an attempt on his life, suffering a broken neck in the process.
Get It Over With: After seeing Yassen apparently preparing to force him to play russian roulette, Sharkovsky flat out refuses to co-operate, telling Yassen that he can kill him if he wants, but he won't play along with him.
Karmic Death: Gets shot by the kid he kept as a slave for three years, who also happens to be the last survivor of the town that was ultimately destroyed thanks to Sharkovsky's earlier actions.
Those Wacky Nazis: Is implied to be a Nazi or at the very least a sympathizer, having both a nazi tattoo and an anti-jewish one.
Would Hurt a Child: Specifically, would hit a child, make him play russian roulette, use him as a food taster if he survives, and have him beaten up by his henchmen when he tries to escape.