Adaptation Relationship Overhaul: This Jon doesn't care about Daenerys being his aunt and continued their romantic and sexual relationship even after learning about the fact. This is most likely because such a detail was meaningless when he was dead set on spending as much time as possible with the woman he loved before the world came to an end.
A Child Shall Lead Them: He is back to his teenage self when he starts ruling his faction. Played with in that he is mentally a world-weary adult, which everyone quickly notice.
Cool Sword: In the new timeline, he doesn't get to wield Longclaw. He gets Blackfyre (the Valyrian steel sword wielded by Aegon the Conqueror and many of his descendents) instead.
CynicIdealist Duo: He's the idealist to Sansa's cynic. Though both are the idealist compared to the rest of their siblings sans Rickon.
Good Is Not Soft: Jon is perfectly fine with giving out cruel punishments if the people are fully deserving of it. The only caveat is that he (officially) cannot be the one responsible for it, since he has to be seen as honorable and merciful.
Humble Hero: Would not be Jon without it. He might accept his birthright and act kingly, but he does not let it get to his head. He greatly enjoys interactions where he can just be Jon and does not mind his loved ones' teasing.
Kneel Before Frodo: A significant number of bannermen who meet him in person to swear their fealty. This includes Wyman Manderly, Howland Reed, and even his foster father/uncle, Ned Stark.
Not So Above It All: Despite being the most merciful of the Stark children, even he had no issues with having Ramsay ripped apart by his own hounds again. He only forbid it out of consideration for Ned, and the only objection he had when he learned that Bran went through with it anyway is that he subverted Jon's authority.
He goes white in the face when he realizes that GreatJon is about to inform Ned and Robb about Arya.
He is horrified to see wights their side of the wall so soon. And doubly so when he learns that the Night King might remember.
Only Sane Man: Along with Sansa, he is the sanest of the latest generation of Starks. Robb is cynical, Arya is cold and vengeful, Rickon is still very much a child and Bran is... Bran. This is why him and Sansa more-or-less take the lead on everything.
Rightful King Returns: Unlike in canon, Jon is pressing his claim to the Iron Throne with Daenerys' full support because the threat of the Others is far more dire, and they can't trust Robert to lead effectively.
Strong Family Resemblance: From both sides. He does have the typical Stark look, but Aemon declares his face is exactly the same as his great-great-grandfather Maekar.
Dark Horse Victory: Thanks to the Remembering, they're now the most powerful house in Westeros and the de facto winners of the Game of Thrones.
The Dreaded: Even the Queen of Thorns considers crossing House Stark to be synonymous with death now. Helps that they have a powerful wizard and a Faceless Man in their ranks, and that's before you get into the Stark's martial and political power and ruthlessness.
Good Is Not Soft: The events of the previous timeline have hardened the latest generation of Starks, much to everyone's awe and fear.
Locked Out of the Loop: Arya becoming a Faceless Man and what she did to the Freys is purposefully being kept a secret from Ned, Robb, Catelyn, and everyone else in Winterfell who doesnt know, because those who do know are aware of how bad their reactions will be. As of this writing, those at Winterfell and Catelyn have been informed thanks to visiting Riverlanders, while Ned and Robb and the men that went with them didnt find out until their visit to Last Hearth.
The entire premise as this. Ned went back in time after his death and rejoins his beloved family, only to find them having grown up in his absence and no longer the children he remembered, having endured countless horrors that he can barely comprehend. Perhaps the most terrifying moment is when Jon proclaims his heritage to Catelyn and declares himself the rightful king of the Seven Kingdoms, because he knows that only war could come from those actions.
What upsets him the most about his children is how ruthless they've become. Sansa feeding Ramsay to his hounds, Bran repeating that via warging, and, most of all, Arya's brutal slaughter of the Freys, all horrify him. Even worse is that Jon, the most noble of his children, is perfectly fine with said actions, just unhappy that they're usurping his authority and potentially putting him in a bad light by doing so.
Authority in Name Only: Officially, he's the Head of House Stark. In reality, only Catelyn, Robb, and Rickon really listen to him. Bran and Arya do what they want, while Sansa only takes orders from Jon. Jon, while raised as a member of House Stark, is actually the head of House Targaryen, and his orders therefore supersede Ned's since he's king.
Conflicting Loyalty/Friend or Idol Decision: Ned is stuck between remaining loyal to Robert, his best friend, and declaring for Jon, his nephew and the boy he raised as his own son. He ultimately chooses Jon, after Sansa points out that he already betrayed Robert by saving and raising Jon in the first place.
Entertainingly Wrong: The Queen of Thorns and many others see Ned as the most cunning of them all. Despite being seen as the most honest and excessively noble, he successfully hid that he was backstabbing Robert the entire time by hiding the last viable Targaryean heir and raising him right in front of everyone under all their noses! This is the opposite of Ned's intentions as he hid Jon because he was family and had no aspirations of deposing the Baratheons.
Oh, Crap!: Humorously, he begins to panic when he learns about Jon and co.'s original plan. In particular, the part where they were considering marrying Daenerys (the woman Jon loves) to Robb. He dejectedly remarks to himself that Lyanna would've been waiting for him with a rusty knife if that had happened.
Silent Treatment: He enters a battle of wills with Sansa after finding out about her cruel execution of Ramsay, including trying to keep her out of discussions. Much to his consternation, it completely fails to take.
What the Hell, Hero?: He doesn't take the more... questionable decisions his children have made well. Unfortunately for him, none of his scoldings take.
Sansa feeding Ramsay to his hounds horrifies and disgusts him, despite the rest of the family thinking that Ramsay deserved it, even the normally merciful Jon.
Bran repeating that action by warging into Ramsay's hounds and then a bear gets the same reaction from him. Bran cares even less about his disapproval than Sansa does.
The aforementioned Jaime Lannister situation.
Lady Catelyn Stark
Catelyn Stark, née Tully
Authority in Name Only: Officially, she's returned to being the Lady of Winterfell. In reality nobody trusts her anymore thanks to her disastrous mistakes in the previous timeline, so Sansa has taken most of her duties instead. To make it official, Sansa is named an emissary by Jon after he departs from Winterfell for the Wall, putting her above Catelyn in status.
She's terribly shaken when she learns Jon is not a bastard but actually her nephew and the rightful king of Westeros. Since then she hasn't spoken a word to Jon and doesn't dare to look at him when in his presence.
Arya. Just... Arya.
Butt-Monkey: Cat just cannot catch a break. First she learns her husband's "bastard" is actually their nephew and the trueborn heir to the Iron Throne, then her husband rips into her for the many mistakes she made in the previous timeline, then Sansa effectively usurps her authority as Lady of Winterfell, and then she learns about Arya becoming a Faceless Man. After that, you can't really blame her for breaking down in tears.
Green-Eyed Monster: She's understandably jealous that Rickon sees Osha more of a mother figure than her.
Heroic BSoD: She faints and has an emotional breakdown after finding out the truth about Arya. Catelyn mentally retreats and hides herself in her room.
Parents as People: While Catelyn loves Arya, she's still very terrified of her being a Faceless Man.
Took a Level in Cynic: He's become a lot more dour, thanks to the events of the Red Wedding. Some even think that him and Jon have switched temperaments.
Trying Not to Cry: Robb doesn't take the truth about Arya any better than Ned and Catelyn do.
CynicIdealist Duo: Cynic to Jon's Idealist, and Idealist to the rest of her siblings' Cynic (sans Rickon).
Everyone Has Standards: Much like her Uncle Edmure, she found what Ramsay did to Fat Walda and her son despicable.
Ice Queen: According to Ned, she's got enough ice in her veins to make the ancient Winter Kings proud. While she's warm around her family and those she trusts, she is the picture of a Lady of a Great House in public.
Nerves of Steel: Related to the above. She is one of the few to not get her emotions in the way in the face of Quyburn, despite her disgust.
Number Two: For Jon. While Robb is Jon's second on the battlefield, Sansa is his second for everything else and functions as Hand to the King for him in all but name until Davos Seaworth arrives to Winterfell.
Only Sane Man: Along with Jon, Sansa is the most straight-laced of the Starks. It's the main reason he trusts her the most out of the entire family.
The Reliable One: Sansa doesn't have near-unparalleled fighting skills and charisma like Jon, supernatural gifts like Bran, unbeatable assassination abilities like Arya, or even a genius tactical mind like Robb. However, she is by far the most politically savvy out of all of them and an effective administrator, which makes her the person Jon relies on the most and the only one besides Davos that he will allow to make decisions on his behalf when he isn't present.
The Dreaded: She's the most feared person in Westeros currently, thanks to what she did to the Freys rapidly spreading to the rest of the continent. Even her own mother is terrified of her when she learns about it.
The Lost Lenore: Was this to Gendry after she died in the previous timeline.
No Guy Wants an Amazon: Sansa states that Arya is unmarriable. Which is fully justified because she's a terrifying super assassin with a body count. Most noblemen would be simply terrified to get near her, much less marry her.
Remember When You Blew Up a Sun?: No one is ever going to forget that Arya fed Walder Frey a pie made out of two of his grandsons and annihilated House Frey. Or fail to tell others about it (not helped by the fact that it's now in song form).
Stealth Hi/Bye: Can appear without any warning, much to Jon's annoyance.
Omniscient Morality License: How he justifies most of his actions. Ned takes umbrage with this, while Jon, Sansa, and Arya have given up trying to stop him.
That Man Is Dead: As far as he is concerned, Brandon Stark is dead and only the Three-Eyed Raven remains. While Jon, Sansa, and Arya have reluctantly accepted this, Ned, Cat, and Robb are still trying to make peace with it.
Happily Adopted: He was raised by Osha and loves her to the point that his first instinct is to ask for her when Awakened. Osha returns the love. Which is unfortunate for Catelyn as her son sees another woman as a mother figure.
Out of Focus: Since he's still mentally a child and died before the Long Night, everyone understandably keeps him out of the thick of things.
Static Character: He's the only Stark that hasn't really changed. Well, besides being a bit of a Wild Child, but since he's so young physically that doesn't mean much.
Wild Child: Shows some shades of this, which is no doubt due to being mostly raised by the Free Folk after Winterfell was taken over by the Ironborn in the previous timeline.
Bannermen and Retainers
Action Girl: Has yet to shine, but she is not a spearwife for show.
Noble Savage: A wildling and a lovable young woman adored by Rickon.
You Are a Credit to Your Race: Everyone in Winterfell is grateful for saving Bran and Rickon, taking care of them and dying for them, to the point of overlooking her origins. Even Lady Catelyn knows what she owes her.
Ser Barristan Selmy
Barristan "The Bold" Selmy
100% Adoration Rating: Held in very high regards by everyone as one of the noblest and more honourable people around.
Conflicting Loyalty: He's torn between his original oath to Daenerys and his desire to protect Jon, the son of his old friend Rhaegar. He ultimately chooses Jon.
"The Onion Knight" Davos Seaworth, Hand to the King
From Nobody to Nightmare: Went from a smuggler to an anointed knight to Hand to the King for the Targaryens. That's quite a leap in status.
Number Two: The official one to Jon, though in reality he shares the post with Sansa.
Parental Substitute: Is this to Shireen. For all intents and purposes, he is her father. While its never explicitly described in that way, its incredibly noticeable that with every decision he makes, the first thought on his mind is her.
Screw This, I'm Outta Here!: Once he confirms that Stannis Remembers, he punches him, then grabs Shireen and hightails it out of Dragonstone.
Hodor AKA Willas
Ambiguous Situation: Since he still can't communicate with everyone else, it's not clear whether or not he Remembers.
Hourglass Plot: Old Nan would tell the Stark children stories. Now Old Nan tries to get Arya to share her stories of what happened in the old timeline.
Mistaken for Cheating: When Old Nan tells Arya that her husband wasn't her first son's father, Arya initially mistakes her for an adulterer.
No Hero to His Valet: Tanned the hide of Egg aka Aegon the Unlikely for trying to take liberties with her.
Undying Loyalty: It was this trope in relation to Winterfell and the Starks that led Old Nan to abandon her first love, even though she was really in fully reciprocated love, her beloved could have easily given her and their family a bright future and even nobility, and in fact he would have insisted in marrying her once he knew she was with child. As she confesses to Arya, her husband wasn't the father of her first child - it was Ser Duncan the Tall, making him Hodor's great-grandfather.
Dating What Daddy Hates: Genderflipped. He's everything Catelyn Stark never wanted for her daughter, a baseborn commoner smith.
Generation Xerox: A Baratheon who loves a Stark girl, who unfortunately dies in a bloody war. Thankfully for the both of the them, everyone went back in time. And Arya returns Gendry's feelings unlike with Lyanna and Robert.
Hidden Backup Prince: Suggested. Catelyn mockingly asks if he's a secret prince like Jon, when asking Sansa why she's so accepting of the relationship.
0% Approval Rating: Which is why many of the below tropes are about how much everyone else in Westeros hates them.
The Friend Nobody Likes: To the Targaryen alliance. The only reasons why the other kingdoms in the alliance aren't ripping pieces out of the Westerlands for Tywin, Cersei, and Joffrey's actions in the previous timeline are the Others and, to a lesser extent, Tyrion and Jaime.
Hero with Bad Publicity: Despite now being on the side of good, their actions in the previous timeline have not made them many friends. In fact, the only reason people outside of the Westerlands are willing to deal with the Lannisters is because Tyrion is now Lord of Casterly Rock in place of Tywin.
How the Mighty Have Fallen: They went from the most powerful Great House in the Seven Kingdoms to the most hated, and thus, by extension, the weakest (since everyone else would be perfectly willing to ally with each other to get back at them). The only Great House weaker than them currently are the Martells, and that's only because Dorne is in the middle of a Civil War.
Machiavelli Was Wrong: Their policy of ruthlessness backfired massively post-Remembering. While the other kingdoms did fear House Lannister in the previous timeline, they also hated them that much more, and the only reason they never tried to get back at the Lannisters is because of the lack of resources. Now, post-Remembering, all the Great Houses have their full military power back, and each and every single one of them has a grudge against House Lannister. If it weren't for the Others, the Lannisters would have likely gone the same way as the Reynes and Tarbecks.
Lord Tywin Lannister
0% Approval Rating: Post-Remembering, he's one of the most hated men in Westeros. Even his own family recognize the folly of his actions, leading all of them to support Tyrion's coup.
All for Nothing: Literally everything he has done in his life to elevate the Lannisters has amounted to nothing after Bran Stark's spell. The legacy he fought for is a complete lie, and his ruthlessness and the antics of his descendants has thoroughly destroyed House Lannister's reputation to such an extent that every other Great House in Westeros hates them and would gladly wipe them out if it weren't for the Others requiring so much manpower. Even his death was pointless: Tyrion killed him because of the emotional abuse Tywin kept heaping on him because he blamed Tyrion for Joanna's death. Except Tyrion wasn't responsible for Joanna's death, Creylen was, meaning that Tywin abused his son and ultimately died for it for no reason.
Arbitrary Skepticism: Tyrion uses this as his excuse for his coup — Tywin will never believe any of them about the Long Night (not without proof, at least), even though their current situation is blatantly magical.
Broken Pedestal: Kevan and Genna admit that Tywin's actions to restore House Lannister's reputation did more harm than good in the long run, since those actions led to everyone in the Seven Kingdoms hating them.
Even Evil Can Be Loved: His siblings still love him despite acknowledging that his actions are reprehensible and have put House Lannister in an unenviable position post-Remembering.
Fatal Flaw: His ruthlessness. Whatever can't be blamed on Cersei or Joffrey can be blamed on Tywin, specifically because of this trait. This backfires after the Remembering, because now no one is willing to ally themselves with House Lannister and the Westerlands in general, since every Great House has something against them. If it wasn't for the mounting threat of the Others, they'd be enemy number one. Not to mention, it was his ruthlessness that convinced the Maesters to use him in their long-term plot to overthrow the Targaryens, to the point that they murdered his wife, who was serving as his Morality Chain.
How the Mighty Have Fallen: His most hated son usurps control of Casterly Rock within literal hours and with no bloodshed, leaving Tywin a non-entity who is currently locked in his own room and engaged in screaming matches with his sister Genna on a daily basis. To make things worse, the only reason he Remembers is because he was so inconsequential to the grand scheme of things that Bran straight up forgot to prevent him from Remembering. Hell, the only reason Tyrion hasn't killed him again or sent him to Dorne to appease the Martells is because Kevan and Genna still love him and want him to live. This is perfectly displayed with Jon's reaction to learning that he Remembers; he's more concerned about Tywin killing Tyrion than anything else he might do before or afterwards, as if that's only the way he's really a threat.
Tywin prided himself on being the most dangerous player in the Game of Thrones by being The Dreaded. Come the Remembering and no one is scared of him anymore, so much so that he only Remembers because Bran forgot about him.
Tywin hated Tyrion for years for supposedly causing the death of Joanna by childbirth. As it turns out, Joanna was actually murdered by Casterly Rock's Maester, Creylen, who let her bleed to death, meaning that Tywin hated and demeaned his son for no reason.
Not Afraid of You Anymore: None of the surviving Stark children nor Tyrion are afraid of Tywin anymore, mostly because they have the Others to be worried about. In fact, this could apply to all of Westeros — nobody is scared of Tywin anymore, either because of the Others or because they hate House Lannister too much to give in to any fear they have.
Unwitting Pawn: To the Maesters of the Conclave, who manipulated him against Aerys in their plot to bring the downfall of the Targaryens.
The Worf Effect: A non-combat version. In the first timeline, Tywin was the most feared man in Westeros and the most powerful player in the Game of Thrones, the man who organized the Red Wedding that led to the deaths of Robb, Talisa, and Catelyn Stark. In the second timeline, Tyrion usurps his authority over Casterly Rock within a couple of hours and locks him in his own room.
Lord Tyrion Lannister
"The Imp" Tyrion Lannister, Warden of the West, Hand to the Queen
I Am Not My Father: Shouts this when his lack of firm reaction to Shae's attempt on his life is compared to what Tywin would do in that situation.
Number Two: The official one to Daenerys. He uses her authority to legitimize Myrcella and Tommen.
Properly Paranoid: Before revealing the treachery of Maester Creylen, he demands that Bronn take the weapons of everyone in the room outside and not let anyone out until he gives the command. Considering that Jaime immediately tries to rush off to kill Creylen and puts up enough of a fight that Bronn has to knock him out, he was right to do so.
To the Pain: The reason he keeps Jaime from killing Maester Creylen right away — it's be over far too fast.
Unstoppable Rage: Is enraged beyond words when he learns of the Maesters conspiracy.
Ser Jaime Lannister
Jaime Lannister, "The Kingslayer"
Big Brother Instinct: When he realizes that Shae is trying to kill Tyrion, he rushes to his defense, and later says that if not for Tyrion's orders to do otherwise he'd respond by either killing her or sending her to Slaver's Bay.
Hero with Bad Publicity: Even more than the rest of his family. So much so that Jon plans exiling him to Tarth when the War for the Dawn is over, as a punishment for him and a reward for Brienne, just to calm those angered at him.
Hidden Depths: People often forget that before he was inducted into the Kingsguard, Jaime was the heir to Casterly Rock. As shown after Shae's attempted assassination of Tyrion, Jaime is perfectly capable of ruling, he just doesn't care for it and knows he won't do as good a job as his father and younger brother.
Kill the Ones You Love: He was forced to kill Cersei in the previous timeline after she sent the Mountain after him. In the new timeline, he can't bring himself to do it again, though he has no problems leaving her for dead.
The first sign that something is wrong for those who Remember but didn't live long enough is when Renly has Cersei at knife-point, and Jaime tells him to "slit her throat and rid us all of her madness".
Myrcella realizes there must be something wrong with Shae when Jaime pales upon hearing her name.
Rebuilt Pedestal: Zigzagged. On one hand, once the real reason he killed Aerys spreads, people more-or-less absolve him of the shame and dishonor of that action, recognizing that he made the right choice. On the other hand, there's still everything else he did.
Unstoppable Rage: His reaction to learning of Creylen's treachery is to smash Tyrion's desk and try to stomp off to kill the man.
He ultimately supports Tyrion's coup because even he can't deny that Tywin's ruthless actions have effectively screwed over the entire family.
Not that his opinion of Cersei was the best after she, you know, blew up the Great Sept with him and countless others inside, but he gives up all hope of redeeming her when Tyrion reveals that she murdered Melara Hetherspoon when she was a child, and thus, was always that crazy and evil.
Coitus Interruptus: When Tyrion and co. confirm that the plan has gone to hell and go to see if Kevan Remembers, they interrupt him while he's in the middle of having sex with his wife Dorna.
The Reliable One: Kevan is the most influential member of House Lannister after Tywin and the most competent after Tywin and Tyrion. It's why he was one of the few outside of the initial Ragtag Bunch of Misfits seen in the first chapter that was selected to Remember along side them before the plan went to hell.
Unstoppable Rage: Upon hearing about what Creylen did, he throws his chair across the room.
Lady Genna Frey
Genna Frey, née Lannister
OOC Is Serious Business: Is usually controlled, but upon hearing of how the Maester conspiracy murdered Joanna, she breaks down crying.
Silk Hiding Steel: Literally, in that she's hiding a dagger in her skirts, much to the surprise of her male rielatives.
Women Are Wiser: She's easily as smart as Kevan, and possibly even Tywin. However, as a woman, her ability to act is limited, so she mostly serves as an adviser and Tywin's "jailer".
Not Now, Kiddo: She notes how her relatives leave her out because she's a child again. Which annoys her because she was nearly grown when she died.
Trust Password: When Jaime wakes her up in order for them to flee King's Landing, she calls out for her father. Jaime initially Myrcella is calling for Robert until she pointedly looks at him and calls him father. Jaime immediately realizes that Myrcella Remembers.
Tommen Waters (formerly Baratheon)
Beware the Nice Ones: He flipped his shit when he learnt that the "slander" about his mother and uncle was true, to the point that Jaime almost found him scary.
Missing Mom: She has been dead for decades by this point
Morality Chain: Joanna would reign in Tywin's ruthlessness and would temper it with kindness. She did too good of a job of it that the Maesters killed her.
Present Absence: Her death causes Cersei and Tywin to treat Tyrion cruelly.
Lord Edmure Tully
Edmure Tully, (Acting) Lord of Riverrun
Adaptational Badass: In the series finale, it was revealed that his canon self was still the same incompetent character that he was throughout the War of the Five Kings, which is a far cry from the man he is in this story.
The Dreaded: After beating Black Walder Frey to death with a rock and purging House Frey of every single member that participated in the Red Wedding, all of which was rapidly relayed to the rest of Westeros thanks to visiting Riverlanders (and in song form, no less!). He's probably the most feared man in the Riverlands at this point, and certainly House Frey's most prominent boogeyman after his niece Arya.
Dumbass No More: To accompany the several levels in badass he took, he's much smarter here than he was in canon. This is shown with how he deals with the Freys: the brutal purge will remind the other Riverland Houses that House Tully will not tolerate betrayal. At the same time, by marrying Roslin to honor those Freys who did stay loyal, Edmure is showing those same Houses that if their loyalty does not waver, they will be rewarded greatly.
Everyone Has Standards: Despite his hatred for most of House Frey, even he found what Ramsay did to Fat Walda despicable, something that his niece Sansa concurs with. As a result, she's one of the only Freys he shows mercy and sympathy for.
Marry for Love: It's implied that he's still fond of Roslin and used Patrek's begging for mercy on the Freys' behalf as an excuse to marry her again.
Patrek Mallister, who only just barely managed to convince him not to massacre the Freys outright.
His uncle Brynden purposefully invokes this by staying by Edmure's side, wanting to make sure that Edmure's purge of the Freys is where his similarities with Tywin Lannister end.
No-Holds-Barred Beatdown: Again, he beat Black Walder Frey to death with a rock. Black Walder's head was so badly mangled that Edmure's men had to hang him by his feet when displaying the body.
Pet the Dog: When "Fat" Walda Frey is brought up as a hostage, he decides she will be treated as a guest instead.
Roaring Rampage of Revenge: The Purge of House Frey has essentially become his equivalent of "The Rains of Castamere" (literally — it already has a song). After hearing about it, multiple people have compared him to Tywin Lannister, including Tywin's own son, Tyrion.
Took a Level in Badass: Very much so. Even his uncle, the Blackfish himself, can't help but be impressed with how much his nephew has grown.
Took a Level in Cynic: His time in captivity, followed by the Long Night, have embittered him significantly. If it weren't for Patrek Mallister, he would've slaughtered all the Freys the moment he got to the Twins despite them sending out riders for parley, reasoning that they would do the same.
Brynden Tully, "The Blackfish"
Irony: He went to the Twins fully expecting to have to push his nephew into being the lord he's supposed to. When he finally arrives, Brynden quickly realizes that the problem is no longer pushing Edmure forward, but reining him in.
White Sheep: Enough that Edmure is happy and willing to marry her again.
0% Approval Rating: House Frey's reputation went down the crapper post-Remembering, and nobody felt sorry for them when Edmure came and enacted his purge in retaliation for the Red Wedding.
Laser-Guided Karma: Old Walder had his minstrels play "The Rains of Castamere" during the Red Wedding. Post-Remembering, when Edmure comes for retaliation, he essentially makes them his version of Castamere, to the point that the bards have a written a song for him, called "The Rock of Doom".
The Purge: Every single member of House Frey that participated in the Red Wedding, whether they Remembered or not, was executed by Edmure. Old Walder himself was murdered by Aenys and Raymund for Arya's purge of them in the previous timline, while Black Walder was beaten to death by Edmure with a rock. As of this writing, only Lothar remains, and that's because Robb hasn't returned to Winterfell yet to deal with him.
Those Freys who died prior to the Red Wedding, and those who didn't participate in it (such as Olyvar, though the Starks sans Bran are still unaware of it), were the only ones spared by Edmure.
"Fat" Walda Frey is the only Frey who no one shows contempt for, thanks to her grisly fate at Ramsay's hands in the previous timeline.
Lord Stevron Frey
Stevron Frey, Lord of the Crossing
Butt-Monkey: People love taking their frustrations against his house out on him, whether he deserves it or not.
Lifesaving Misfortune: A variant. Because he died in battle defending Robb Stark in the previous timeline, he's spared from Edmure's brutal purge of his house in the new timeline and succeeds his father as the new head of House Frey.
Practically Different Generations: His half-sister Roslin, Edmure's chosen bride, is young enough to be Stevron's granddaughter. Stevron is not sure if they've spoken to each other even once in passing before the betrothal was made.
Sins of the Father: Stevron has the unenviable job of being the new head of House Frey in the new timeline, where his house's reputation is completely in the mud thanks to the events of the Red Wedding. That means he has to deal with people treating him like he had done those things, and recognizes that he'll probably have to deal with that for the rest of his (likely short) life.
"Fat" Walda Frey
100% Adoration Rating: A minor variant. Even people who hate Freys pity Walda, because her fate was terribly undeserved no matter what her family had done.
White Sheep: She's probably the only Frey anyone actually likes, and it's mostly out of pity more than anything else.
From Nobody to Nightmare: House Tarly goes from simply being one of the Reach houses to the most powerful House in the Reach thanks to Sam overthrowing both his father and Mace Tyrell to become Warden of the South and then engaging Dickon to Margaery. With Loras Tyrell dead, that makes Dickon Mace's Heir-In-Law; so, when Sam reverts Wardenship back to Mace after the Third War for the Dawn is over, the title will then pass down to Dickon when Mace inevitably dies.
I Have No Son!: Inverted. The Tarlys disown Randyll after they found out about what he did to Sam.
Samwell "Sam" Tarly, Lord of Horn Hill and Warden of the South
Cincinnatus: After getting the backing of House Redwyne and House Hightower, he peacefully and privately overthrows Mace Tyrell as Warden of the South. He only took the position to prepare the Reach against the Others and plans to abdicate and return to Horn Hill once the Others are defeated.
Humble Goal: If he and Gilly survive the Long Night, he plans to marry her.
Last Stand: He died in the previous timeline holding the line against the Night King to buy time for Bran to cast his spell with the Children of the Forrest.
Marry for Love: Sam refuses the politically expedient option of marrying Margery so he could marry the Free Folk Gilly. There's no political gain to marrying Gilly, he just refuses anyone but the woman he loves after all they've been through.
Not Afraid of You Anymore: Sam tells his father that he refuses to be cowed by him anymore before overthrowing him as Lord Tarly.
Who's Laughing Now?: After being abused and kicked around by his father in previous timeline, he overthrows him and and imprisons him. Afterwards, everyone starts pushing Sam's victories down Randyll's throat.
Arranged Marriage: Sam sets him up with Margery Tyrell to secure their houses' alliance.
Everyone Has Standards: Dickon admitted that he wouldn't have stuck with his father to the end had he known Randyll threatened to kill Sam.
Heir-In-Law: With Loras dead, House Tyrell has no heir. So when Dickon marries Margery, he will be the the Lord of Highgarden, which will finally get House Tarly and House Florent off the Tyrells' backs.
Laser-Guided Karma: The rare positive kind. He sides with his brother against their father after Randyll confessed to essentially trying to murder Sam by sending him to the Wall. In exchange, Sam gets him betrothed to Margaery Tyrell, which is a better match than Dickon could ever hope for, especially since, with Loras's death, it makes him the new Lord of Highgarden.
Break the Haughty: His family disowns him, his bannermen help his hated son overthrow him and he has to watch said son be wildly successful while he seethes in house arrest.
Cruel Mercy: Since Sam is not a kinslayer, he has Randyll locked in his rooms under guard. But Sam made sure the rooms are nice and he has books to read so he's not bored. Randyll is really offended by the books.
How the Mighty Have Fallen: Initially The Patriarch of House Tarly who was obeyed, loved and feared. Now he is under house arrest, his entire family hates him and his hated first son is now the most powerful man in the Reach, with everyone speaking of Sam's bravery and victories.
I Reject Your Reality: He refuses to believe the Others are real despite everyone telling him that they are.
Laser-Guided Karma: For his cruelty to his intellectual son, Sam locks in his rooms with only books to pass the time. Which offends the anti-intellectual Randyll.
Shipper on Deck: She supports Sam/Gilly, telling her mother of Gilly's kindness and beauty and hopes to see Little Sam again.
Lady Melessa Tarly
Melessa Tarly née Florent
Armor-Piercing Slap: Melessa gives these to her husband after finding out that he threatened to kill their son.
Mama Bear: She slaps Randyll and screams at him when she finds out about Randyll's death threat against Sam.
Locked Out of the Loop: She has no memory of the previous timeline and is really confused about the changes in everyone.
Not So Different: While Melessa is nicer than her husband, she is just as bigoted against Wildlings.
OOC Is Serious Business: Melessa Tarly's reaction to learning her husband threatened to kill Sam if he didn't join the Night's Watch is to give him an Armor-Piercing Slap and scream at him, stunning everyone at the total reversal of her normal personality.
Parents as People: While Melessa's happy that Sam managed to find love as a man of the Night's Watch, she believes that Sam shouldn't marry a Wildling now that he's Lord of Horn Hill. Melessa believes Sam should act more appropriately to his rank.
Parental Marriage Veto: Now that Sam is Lord of Horn Hill and Warden of the South, Melessa believes that Sam should act more appropriate to his rank. Meaning that Sam should put Gilly aside and marry a noblewoman of fitting rank.
Shared Family Quirks: Her angry face is exactly the same as her cousin Selyse Baratheon. Sam believes its the Florent side of her.
So Proud of You: She is very proud of the man Sam became especially that he succeeded in his harebrained scheme to become Warden of the South.
Her husband Luthor wasn't being an idiot when he rode his horse off a cliff. He was assassinated by the Maesters who poisoned his horse and made his death seem like a stupid accident.
The truth of Loras' death is this to an extent, as she knows that once it spreads (and it will spread), any sympathy anyone would have had for House Tyrell will instantly evaporate.
Pet the Dog: As much as she bemoaned his stupidity, she honestly did love her husband Luthor. Learning that his death was actually an assassination absolutely enrages her.
Rage Breaking Point: After Leyton and Sam start accusing Lomys of murdering Alerie, she manages to keep her composure throughout most of the argument. It's when they reveal he murdered her husband Luthor as well that that she snaps and demands Leyton kill Lomys.
So Proud of You: Is very proud of Mace for killing their treacherous Maester and avenging her husband and daughter-in-law.
Why Are You Not My Son?: When Sam reveals the true extent of his intelligence after convincing the Tyrells to make him Lord Paramount until the Others are defeated, Olenna laments the fact that he wasn't born to her and instead to Randyll Tarly, who clearly didn't see Sam's true value.
Lord Mace Tyrell
Mace Tyrell, Lord of Highgarden
Beware the Nice Ones: Kills his Maester when he learns the man was responsible for the deaths of his wife and father.
Ill Girl: Was believed to be sickly due to her difficulty in childbirth and most of her children being stillborn. She was actually being poisoned by their Maester throughout her marriage until it finally killed her.
Make It Look Like an Accident: Was believed to die in childbirth after giving birth her stillborn fifth child. She was actually poisoned to death.
Pet the Dog: Honestly did care for Tommen and was devastated to learn he committed suicide after her death.
Lord Robert Arryn
Robert "Robin" Arryn, Warden of the East
Authority in Name Only: Even though he has all his faculties back, Robin is still a child and thus needs a regent, especially for the upcoming Long Night. Thus, his new Parental Substitute Yohn Royce is taking on his responsibilities until he reaches his majority.
Medication Tampering: His "medicine" was actually poison made by Lysa and Littlefinger's pet maester to make him reliant on them.
Lady Lysa Arryn
Lysa Arryn née Tully
Not Worth Killing: What everyone considers her as. They could execute her for murdering Jon Arryn and being an accessory for Baelish's plans, but, at this point, she's so freaking nuts that doing so would be a Mercy Kill.
Sanity Slippage: Not that Lysa was particularly sane to begin with, but after Remembering her death at Littlefinger's hands, any resemblance of mental coherence she once had is gone. Yohn Royce currently has her drugged to the gills for her own safety, and Robert doesn't bother with trying to get revenge on her because there's no point with her being as mad as she is.
Authority in Name Only: Officially, they're still the ruling house of Westeros and the Royal Family. In reality, they only really rule the Stormlands — everywhere else has either resworn their allegiance to House Targaryen (or split, in the case of the Crownlands), or is currently neutral (Dorne, which is stuck in a Civil War).
In the Blood: Many people seem to think that Stannis's decision to burn Shireen was his Targaryen blood finally acting up, among them Renly. Readers also note that Robert's irrational hatred for all Targaryens, not just Rhaegar and Aerys, is possibly his form of Targaryen madness as well.
Locked Out of the Loop: They're the last people to know anything, since communication with King's Landing is purposefully being stifled by the rest of Westeros. They didn't find out about Jon Targaryen's existence until Chapter 25, and they didn't find out about Jon Snow being Jon Targaryen until Chapter 35/36, long after everyone else had and long after most of those same people had sworn fealty to him.
King Robert Baratheon
Robert Baratheon, First of His Name
Authority in Name Only: Officially he's still the King of Westeros. In reality, he only controls the Crownlands and Stormlands. With the exception of Dorne, everyone else has sworn or is in the process of swearing fealty to Jon. Dorne, meanwhile, never respected Robert's authority to begin with and is too busy dealing with their own Civil War to care about who sits on the Iron Throne.
Bait the Dog: He was infuriated to learn that Stannis had Shireen burned and threw him into a Black Cell. Then, when trying to think of a way to make things up to Ned for how things went down in the previous timeline, he decides to marry off Shireen to Robb and make the latter king without either of their consents. And if Robb didn't like the idea of having sex with a girl with greyscale scars, well, that was what whores were for.
Berserk Button: Finding out about the Lannisters' betrayal angers him. Finding out about the existence of Jon Targaryen enrages him. Finding out just who Jon Targaryen is, and that Ned has betrayed him, sends him right into one hell of an Unstoppable Rage.
Fatal Flaw: Wrath and self-gratification. Robert is a great warrior and a charismatic leader, but his irrational hatred of the Targaryens and previous missteps have destroyed any chance of uniting the Seven Kingdoms under him again, thanks to the mounting threat of the Others. Considering how badly Westeros needs Daenerys' dragons to defeat the Others, and how terrible a king Robert was in the previous timeline and still is now in certain ways, it doesn't take much thinking for the Great Houses to decide that a Targaryen restoration is in the best interest of the continent.
Horrifying the Horror: Demon of the Trident he may be, seeing the zealous and militant Lancel Lannister was enough to unnerve him and snuff out his interest in interrogating other prisoners for a while, even Cersei after finding out that her children are Jaime's, not his.
It's All About Me: Despite changing somewhat for the better, in the end Robert is still obsessed with his self-gratification and makes decisions on the behalf of others without any concern for what they want. His initial plan to betroth Robb to Shireen, for example.
Kick the Son of a Bitch: Throws Joffrey's corpse at Cersei as the first of many punishments he has in store for her.
Unstoppable Rage: As noted above, his reaction to finding out that Jon Snow is Jon Targaryen causes him to trash the Small Council chambers.
Lord Renly Baratheon
Hyper-Competent Sidekick: Finally proves his worth as Master of Laws by quelling the uprising in King's Landing and restoring the City Watch despite the lack of men. Too bad being Locked Out of the Loop by three-quarters of Westeros hampers his results.
Irony: A depressing example. In the previous timeline, he served as The Lost Lenore to Loras. In this timeline, just as they were reunited, Loras was killed, making him The Lost Lenore to Renly.
It's All About Me: His reaction to Stannis' downfall and Shireen's disappearance is to preen at how he's now Robert's heir by default.
Number Two: Becomes this to Robert, post-Remembering.
He's officially on everyone's shitlist after what he did to Shireen spreads. When Robert found out, he immediately had Stannis thrown into a black cell.
Tyrion outright calls him a worse father than Tywin. Considering Tywin's poor parenting is something that Tyrion is intimately aware of and indirectly led to the War of Five Kings in the previous timeline, that says a lot about how far Stannis has fallen.
Descent into Addiction: The guilt of burning poor Shireen and all his other crimes and failures have driven him to become an even worse alcoholic than Robert, and in record time to boot.
How the Mighty Have Fallen: He went from a respected, if not exactly loved lord and true heir of his older brother Robert to one of the despised men in Westeros, in the same vein as the Lannisters and Petyr Baelish.
Laughing Mad: When he learns that Jon Snow is a Targaryen. It seriously freaks out Robert and Renly.
Taking You with Me: This is clearly on his mind after learning Jon's true parentage. He's clearly taking delight in the fact that the family that resented him will no longer hold the throne.
Driven to Suicide: Just like in the old timeline, she hangs herself out of guilt for what she did to Shireen.
100% Adoration Rating: Shireen was already a target of pity thanks to her battle with greyscale and the resulting scars, but after what Stannis did to her in the previous timeline spreads, she might as well be canonized as a saint. Tellingly, it's offering to remove her scars permanently that stays Davos from ordering Qyburn's execution.
Only Sane Man: Considers herself to be this of the Baratheon family, at least as far as the trueborn members go. As her father Stannis burned her alive in the previous timeline, her uncle Robert still irrationally hates all Targaryens to the point of obsession, and her uncle Renly is extremely self-conceited even by Westerosi standards, she may have a point.
Bannermen and Retainers
Grand Maester Cressen
Locked Out of the Loop: He doesn't Remember, so he's shocked by a lot of what happened to the Baratheon brothers.
By far the most hated woman in Westeros — it's her actions, more than Tywin's and even Joffrey's, that have destroyed House Lannister's reputation to a near-unsalvageable level. Even Jaime and Tommen hold nothing but contempt for her now.
Daenerys actually uses this in her negotiations with the Iron Bank. When the representative they sent makes an implied threat to support Cersei's claim when Civil War finally breaks out in Westeros, Daenerys flatly tells him that Cersei is now talked about in the same breath as Aerys and there won't be a single kingdom that will be even remotely willing to throw in their lot with her.
The pedestal Jaime had her on completely shattered after she sent the Mountain to kill him. Jaime ended up killing her in the previous timeline; in the new timeline, while he doesn't have the will to do it again, he has no issues leaving her behind and telling Renly to slit her throat.
Kevan still held out hope for redeeming her even after she blew up the Great Sept with him in it. Then he found out she murdered Melara Heatherspoon when she was just a child, and realized there was no hope for her at all.
Fate Worse than Death: She's still alive, shockingly enough, but only because Robert plans on paying her back for every indignity he suffered during their marriage. The first thing he does is dump Joffrey's corpse into the same cell as her, and he makes it clear that it's staying there for a long time.
Kill the Ones You Love: In the previous timeline Cersei eventually went so insane that she sent the Mountain kill Jaime, the only loved one she had left. In turn, Jaime killed the Mountain and then killed her.
Locked Out of the Loop: She doesn't Remember. As a result, she has no idea what's going on or why everyone has turned on her. Even when Robert tells her the truth, she refuses to believe it.
She was never the sanest to begin with, but after she usurped the throne in the previous timeline, she started going completely spare. Apparently her insanity became so great that people thought she was worse than Aerys, and she continued attacking the Targaryen forces even after the Others proved to be a danger to all of humanity.
She shows signs of this again in the new timeline after she's thrown into the Black Cells. Not helping the matter is that Robert clearly plans to egg her insanity and grief on for his own pleasure.
Church Militant: Since he Remembers, he's still very much a member of the Faith Militant despite Robert snuffing them out before they could really become an issue in this timeline.
Horrifying the Horror: His zealous turn to violent piety disturbs and unnerves everyone who interacts with him, from Robert to Mandon Moore.
0% Approval Rating: Worse than Tywin. Everyone remembers him as one of Westeros' most despicable monarchs. Only his mother beats him out, and that's probably because she's where he gets his worst traits from.
Asshole Victim: Given his actions in the main timeline, only his mother mourns his death while everyone else is overjoyed and speak about him with the utmost contempt and loathing.
Authority in Name Only: Even worse than his father. In his mind he is still the king, but everyone loathes him and Sandor wastes no time in offing him once and for all.
Back for the Dead: Upon awakening, Joffrey is quickly beaten to death by Sandor Clegane for his cruelty.
0% Approval Rating: One of the most hated people in Westeros post-Remembering, along with Tywin, Cersei and Joffrey. Everyone loathes him and Sansa in particular has to refrain herself from dancing with glee when she learns of his passing.
Asshole Victim: Not even Catelyn mourns him, acknowledging that her sweet childhood friend is long, long gone. Everyone else is delighted by his death.
The Worf Effect: In the previous timeline, Petyr Baelish orchestrated the War of Five Kings and played the various major players of Westeros for years. In the current timeline, he doesn't Remember and thus he's immediately murdered for those actions by Jaime. Even if he had Remembered, he was already a dead man walking, since everyone who made it to the Long Night is perfectly aware of his treachery and wouldn't dare to risk him living for a second longer.
Prince Doran Martell
Doran Martell, Prince of Dorne
Actually Pretty Funny: Like Oberyn, he was distinctly amused when he learned that Ned Stark had hidden the true heir to the Iron Throne as his bastard, right under Robert's nose.
Everyone Has Standards: As much as he hates Lannisters, he was disgusted when Sarella revealed that the Maesters murdered Joanna Lannister and was happy to learn that the Maester who did the deed would be facing justice soon. Seeing as Joanna was one of his mother's best friends, it's only to be expected.
Irony: The one time he decides to take after his brother Oberyn and act first, it backfires massively, resulting in the death of his son and heir and Dorne descending into Civil War.
Not So Different: He's got his brother's fiery blood and temper, he's just better at controlling it. Ellaria and the Sand Snakes' actions in the previous timeline, however, pushed him far enough to act as impulsively as Oberyn does, with disastrous results.
Prince Oberyn Martell
Oberyn Martell, "The Red Viper"
Actually Pretty Funny: While he was unhappy to learn that Rhaegar set aside Elia for Lyanna, learning that Ned Stark hid Lyanna's trueborn son as his bastard, right under Robert's nose, leaves him roaring with laughter.
Eye Scream: Loses an eye to Aero Hotah during the chaos in Sunspear.
I Have No Son!: Wanted nothing to do with the other Sand Snakes after their coup in the old timeline.
Last of Her Kind: Of the Martells' younger generation, as Oberyn's only living daughter.
Ms. Exposition: For the Martells. She's the one who brings them into the loop, revealing the Maesters' conspiracy and the second coming of the Long Night to them.
Only Sane Man: Of the Sand Snakes. Doran outright admits he's sparing her because of this.
The Iron Islands
Lady Yara Greyjoy
Cruel to Be Kind: To snap Theon out of his reversion to being Reek, she kicks him in the crotch to remind him that his castration has been undone.
Groin Attack: Gets kicked in the balls by Yara to remind him that he has them back.
Heroic BSoD: Being confronted by Robb and Ned causes him to mentally revert to Reek.
Persona Non Grata: As a result of his actions, Theon cannot return to Winterfell on penalty of death.
Aesop Amnesia: He did not take any lessons from the old timeline and tried to restart the razing of the North. This gets him thrown in the dungeons by Yara.
The Wall and Beyond
"Dolorous" Edd Tollett, the 999th Lord Commander of the Night's Watch
Berserk Button: Being reminded that the Wall fell under his command, though it doesn't stop Jon from doing an Aside Glance when he finally arrives at Castle Black.
The Eeyore: Subverted post remembering. He himself states that he needs to justify his moniker, but he is so delighted not to be in command that he only does it for the sake of it.
General Failure: Invoked by everyone as in the Bad Future, under his command of the Night's Watch, the Wall fell and the continent was overrun by the Watch's sworn enemy, the White Walkers. He's very bitter about this and very happy to let Jeor Mormont become Lord Commander once again.
Jon averts it, Lampshading that he did his best to salvage a situation that went to the Seven Hells long before he even joined the watch.
Humble Hero: As part of his bitterness over his failures as Lord Commander, he doesn't want any position of authority, as he doesn't trust himself with it.
No Hero to His Valet: One of the scarce fews who treats Jon, as if he still was a fellow brother of the Night Watch instead of his king, with lots of snark on the side. Everyone around is outraged, but Jon finds it both refreshing and hilarious.
Servile Snarker: Related to the above, he overly exaggerates any display of obedience for the sake of friendly teasing.
Benjen Stark, First Ranger of the Night's Watch
Locked Out of the Loop: Not even he knew about Jon being Lyanna's son. He's understandably shocked and angry at Ned when he finds out.
Maester Aemon Targaryen
The Chooser of The One: Bloodraven entrusted him with the Targaryen heirloom swords, Blackfyre and Dark Sister, to give to a good king. Aemon ultimately gives them to Jon.
Death of a Child: A complicated example. In this timeline, Little Sam never was conceived at all... but Gilly still remembers being pregnant, having a baby and loving him, and now he's forever lost to her.
Kick the Son of a Bitch: She and her sisters immediately murdered Craster right after Remembering, before packing their baggages and hightailing for the Wall.
Land of Always Winter
The Night King
The Night King, Ruler of the White Walkers
Adaptational Badass: While the canon Night King was terrifyingly powerful and could only be taken down through bait, stealth and sneak attack, he lacks battle prowesses and displays of magic... Which the fic happily provides.
Arch-Enemy: The Night King is this to Jon Targaryen, as in the original timeline.
An Ice Person: As in canon, he uses ice-weapons he likely creates himself. His White Walkers, and most likely him as well, can conjure many enormous ice stalagtites from the ground to slaughter many foes at once.
Outside-Context Problem: The main reason for his landslide victory in the original timeline. Men and ressources were way too exhausted by decades of squabbles to stand a chance. He remains this in the new timeline, to everyone who died before seeing for themselves that the old myth wasn't one.
Adaptational Nice Guy: Lost all the authoritarianism and thirst for power she started displaying in the last seasons. Surviving the Apocalypse helps with putting things into perspective.
Adaptational Heroism: This Daenerys is fully supportive of Jon pressing his claim, most likely because the situation with the Others had become so dire that she came to not care which of them sat on the Iron Throne, as long as it was a Targaryen.
Dragon Rider: Would not be Daenerys without her three children. She uses a spell to make them grow much faster than before.
The High Queen: Pretty much the single ruler of all of Essos by the tenth chapter at most.
HeelFace Turn: Swears fealty to the girl he was about to kill as soon as things go south. For self-preservation rather than conviction, but he provides genuinely good advice.
Smug Snake: Acts very arrogantly and smug towards Dany and Viserys, until the Slave Revolt overthrows him and he becomes a hostage.
Token Evil Teammate: To the court of Daenerys after his HeelFace Turn. Dany and the rest make it crystal clear that any trust they give him will have to be hard earned, but he has no choice but to fall in line and he knows it.
Irony: She left Westeros in a hurry because she did not want to get involved in its politics. Landing in Pentos leads to her getting semi-drafted into Daenerys' service.
Laser-Guided Karma: Positive version. He died saving Dany's life, so the former slaves decide to spare him and his family and make them the official rulers of Mereen.
Reality Ensues: His family was spared was partly out of gratitude and partly out of pragmatism. While they're glad to have their freedom, the former slaves of Mereen know that almost none of them have the necessary education and experience to rule the city. Hizdahr, however, does, and has proven himself to be sympathetic to them and loyal to Dany, making him an ideal co-ruler for Daario. Daario can handle the military, while Hizdahr can handle the actual day-to-day ruling.
The Iron Bank
Bullying a Dragon: Literally. They send a representative to Daenerys, who then tries to subtly threaten and bully her with what limited information they have. She figuratively rips him to pieces by revealing just how completely uninformed the bank is about the actual situation, and promptly sends him packing, all the way back to his superiors with his tail between his legs.
Locked Out of the Loop: Their information about the Remembering was so incomplete that they thought backing Cersei Lannister was their best option. Luckily for them, Daenerys was more than happy to explain what was really going on.
Morally Bankrupt Banker: In a literal sense — the Iron Bank is completely amoral, and see themselves as Above Good and Evil. All they care about is getting their due, so they'll back whichever side is more likely to be in a position to pay off the debts owed to the bank. This is why they were initially willing to back Cersei in the new timeline (as she payed off the Iron Throne's debt in the previous timeline), until Daenerys revealed that Cersei was so hated that the chances of anyone supporting her claim are nil. After that, they threw in their lot with the Targaryens once they learned of Jon's existence, as his claim made him the most likely to win the upcoming scuffle with the Baratheons.
Spanner in the Works: They're the ones to tell the Baratheons just who Jon Targaryen is, after Robert's new Master of Coin made contact with their local representative to assess the throne's debt to the bank.