Childhood Brain Damage: Played for Laughs at one point, when Garion comments that maybe his tendency to charge into dangerous situations without thinking about the danger is because his Aunt Pol dropped him on his head as a baby.
Unskilled, but Strong: Especially in the first series, where he lacks finesse and experience, but has enough raw power to terrify the Grolim Hierarchs (though notably, not the likes of Ctuchik). This isn't really rectified either—it's just that by the second series his raw power is so significant that his lack of talent doesn't matter.
Angsty Surviving Twin: Polgara, who was very close to her sister and outlived her thanks to being a sorcerer.
"To this very day, if you're impolite enough to ask Polgara how old she is, she'll probably say something like, 'We're about three thousand- or so.' Beldaran's been gone for a long time, but she still looms very large in Polgara's conception of the world."
Badass: She stormed a castle in order to save Garion, resisted a god trying to submit her to his will, banished a freakin demon (though in that instance, Aldur was helping her a little), and is pretty much as feared as her father (if not more). She gets it from her mother.
Brainy Brunette: Their mother sorcerously altered both twins in the womb to prepare them for their roles in life, including making Polgara this as opposed to Beldaran's blonde hair.
Cool and Unusual Punishment: When she decides to transform Salmissra into a giant snake, thus freeing her from all her human nature and all the drugs her body was suffering from.
Eccentric Mentor: Belgarath has several bad habits- the stealing and overimbibing and all that business in Maragor after Poledra's death- and he generally looks like a tramp, but he is still Aldur's first disciple and quite capable of demonstrating why all the Grolims are terrified of him.
Grandpa What Massive Hotness You Have: He's the oldest person in the world short of the gods and looks appropriately venerable for an aged sorcerer, yet pulls this off when he strips to his briefs to dive into a lake and shows off his impressive physique in the process.
Large Ham: He is a professional story teller and he uses it whenever he can.
Overshadowed by Awesome: At the beginning Durnik is just a Sendarian blacksmith in the company of a master thief, a competent warrior and two sorcerers. He become more and more prominent as the story goes along though.
Unskilled, but Strong: One of the reasons for his success as a fighter in the first series. Durnik may not be a warrior, but he's a big man and as a smith he possesses formidable upper body strength. He gains more talent as the story progresses.
The Berserker: Barak's an unwilling heroic example. Apparently this kind of thing is common in Cherek warriors, even the ones who don't turn into bears.
The Big Guy: He fullfills this role in Pawn of Prophecy. In the later books he's The Hero of The Big Guy Band, doing his best to keep the likes of Hettar, Mandorallen, and Relg in line.
Cursed with Awesome: Barak's "curse" is to turn into a bear when Garion Heir to the long-empty throne of Riva and Overlord of the West by treaty is threatened. A rampaging, unstoppable bear. At first he thinks it's just a progressive ailment and attempts suicide, but once he gets filled in on the trigger conditions (i.e., his family is now the hereditary protectors of Garion's family), he contemplates tasteful ways to work it into his coat of arms. Who wouldn't want to advertise that?
Dual Wielding: With a sword in one hand and a battleaxe in the other.
Jerk with a Heart of Gold: If he likes you, he's sarcastic. If he doesn't like you, he's sarcastic. If he's worried, he's sarcastic. If he's feeling fine, he's sarcastic. Only a few things ever break through his shell of smartassery.
Roaring Rampage of Revenge: At one point during The Mallorean, certain parties conspire to have one of Silk's fellow spies killed. The woman in question is an old friend/enemy, but someone Silk had immense respect for. His response to their conspiracy eventually causes a mass exodus of all the most powerful people related to the plot, surrounded by guards, and many of them simply do not make it out.
Sarcastic Devotee: At one point Garion notes that he understands now why Belgarath was so consistently irritated at Silk throughout the entire series - leadership is hard enough without someone standing behind you providing a sarcastic running commentary.
Breast Plate: Justified, believe it or not. Ce'Nedra intends to speak to an army, and it's very important that she look like a queen and not a little girl (or boy). Problem is, she's very flat. So she has an armourer solve her problem (after a very long debate).
Spell My Name with an S: In-Universe example. Dryad names always have an X in them, but hers seems to break the rule. In The Malloreon it's explained that it can also be spelled "Xe'Nedra." After a moment of trying to pronounce it, Garion decides to keep calling her Ce'Nedra. It's also implied she tries to work an X into her daughter Beldaran's name.
Tsundere: Ce'Nedra makes most anime Tsunderes look amateurish. A good capsule description of her is "Asuka, only having traded in all of her self-esteem issues for even more self-centeredness."
Sir Mandorallen, Baron of Vo Mandor
Armour Is Useless: Averted. Mandorallen's armour is probably the only reason he's still alive.
BADASS: He slays lions with his bare hands. He attacks Algroth packs for fun. He threatens Tolnedran legions by himself. He refuses to fight an enraged Garion—because he doesn't want to hurt him. In a World of Badass, Mandorallen manages to stand head and shoulders above the rest.
Badass Normal: All that crazy stuff we just mentioned? He does it with no powers or supernatural aid of any kind.
Heroic Bastard: He is "The Bastard of Vo Mandor" due to some irregularities surrounding his birth.
Hidden Depths: Mandorallen isn't overly burdened with brains, but he's still got plenty of depth beneath his Knight In Shining Armour exterior, and is far more socially intuitive than many members of the group.
Stop Helping Me!: The Orb tries so hard to be helpful. To the point that it has to be told that its help is not required. It thought that rearranging the stars to spell "Belgarion" was a request rather than an example.
Royals Who Actually Do Something: Runs his nation, leads his army, and commands his fleet. He's also very intelligent and does his best to keep abreast of world events and assist Belgarath.
Stay in the Kitchen: Subverted. When Ce'Nedra demands the Alorn kings follow her, Anheg sides with the conservative Brand and does all the talking...in order to preemptively sabotage any arguments Brand might raise against her.
Queen Islena of Cherek
Achievements in Ignorance: It's illegal to throw a priest into prison without evidence. Islena doesn't know that, and Grodeg knows she doesn't. Anheg finds the entire situation hilarious.
Brainless Beauty: When Anheg is asked why he married her, his response is that "It certainly wasn't for her brains!"
Took a Level in Badass: Initially Islena is a pompous wuss who caves in every time Grodeg shouts at her. She finally has enough, threatens to have him muzzled and thrown in jail, and ships he and the rest of the Bear-Cult off to join the army. Anheg is impressed.
Weak Willed: Is initially totally under the thumb of Grodeg, Chief Priest of Belar. With some help from Merel and Porenn she eventually overcomes this.
Happily Married: By the end, and after an intervention from the Purpose of the Universe itself.
Hidden Depths: Merel appears to be a shallow, petty bitch. The "petty" and the "bitch" are right on the money, but there's more to her than meets the eye, and we see it as early as Pawn of Prophecy when she stands up to Anheg on Barak and Garion's behalf.
Rape as Backstory: How her marriage with Barak started. She even locked the door and he knocked it down. No wonder she's incredibly spiteful to him at first.
Regent for Life: Brand is part of a long line of Rivan Warders, who vowed to rule the island and protect the Orb until the Rivan King returned. Unlike his predecessors, Brand is actually able to give up this position.
Papa Wolf: To Ce'Nedra. Despite it being a binding treaty his nation signed, does everything he can to get Ce'Nedra out of the ceremony at Riva, where he fears she'll be humiliated. Despite constantly bickering with her, it's evident he loves her.
King On His Deathbed: In the Malloreon. He was already very old to start with, as the intrigue in Tolnedra in the Belgariad all centers around who his successor will be, so this is a Foregone Conclusion.
The Emperor: Well, duh. Tolnedra is actually a medium sized country leaning towards the smallish, but he still has a very long arm as Tolnedra is the economic powerhouse of most of the world and has an international highway system controlled by its legions. As a result, Ran Borune is not afraid to throw his weight around when it comes to politics, though he only gets his way some of the time.
Evil Is Sexy: Described by all characters as a very beautiful woman, and proves to be a very sensuous character, she attempts to seduce Garion to her side, and use him for her own most likely nefarious purposes. Very nearly succeeds.
God Save Us from the Queen: Has a nasty habit of killing off her eunuchs on a whim, and is described as having the most absolute, iron-fisted rule over her people out of all the monarchs in the West.
Involuntary Shapeshifter: Sort of. For her shenanigans, Polgara transforms her into a giant snake, permanently. Actually ends up being a better monarch this way.
Axe Crazy: He actually foams at the mouth in combat.
Badass: A veritable force of nature on the battlefield.
The Berserker: Goes utterly mad(er) while fighting. He utterly terrifies his troops, but at the same time, galvanises them. It's as though by giving into his madness they feel that they too may become as invincible as he.
Bling of War: Taur Urgas' chainmail is dipped in red Angarak gold. Rather than making it look overly pretty, it instead makes him look as though he has bathed in blood.
The Brute: He may be the King of Cthol Murgos, but one could definitely make the case of Taur Urgas being The Brute. He's got all the hallmarks of the personality: no empathy, totally Axe Crazy, a Berserker in combat, and he also seems to fit in terms of his position and role in the villainous hierarchy: he's the ruler of one of the largest countries subject to Torak, and provides manpower and muscle for the Angarak armies, while still being subject to Ctuchik, Torak's Dragon.
Narcissist: Torak cannot conceive of a world that doesn't revolve around him. In the Book of Torak he claims to have created the Universe (his own mother). He's also one in the classic sense, being utterly obsessed with his own appearance.
Precocious Crush: When Silk was an up-and-coming star of the Intelligence Service, he'd often play dolls with the boss's niece, Liselle, who was approximately twenty years younger than him. As an adult, she pursued him and caught him.
Defeat Means Friendship: Zakath is one of the rare pre-emptive examples of this trope, in that after finally dawning to just how thoroughly the odds are against him he decides to just skip the 'defeat' and go straight to the 'friendship'.
"You know something, Garion? I've always believed that someday you and I would go to war with each other. Would you be terribly disappointed if I decided not to show up?"
Token Evil Teammate: Sadi's alliance with the protagonists doesn't mean he's given up his personal corruption. While he likes them all by the end, and has certainly become a braver, more well-rounded individual, he remains an unapologetic scoundrel, a drug-dealer, a poisoner, and a criminal without the slightest bit of shame.
Hidden Depths: Beldin is hideously deformed and has disgusting personal habits, but is a Genius Bruiser who is probably the most intelligent and well-read man in the world, as well as perfectly capable of breaking people who don't pay attention to his lectures in half.