Best FrostIron Alternate Universe (AU) Fanfics

by Maeglin_Yedi

“So you’re my dad,” Harry said to the large, blond one. The one with the hammer. Supposedly a god, even.   “Yes, I have conceived you myself!” His ‘father’ said with a huge, beaming smile. “With your brother,” Harry said very slowly, very carefully. “Who is apparently my mother.” Harry gave t

by Potrix

Initially, Tony is wary of having the team around more or less twenty-four-seven despite the half dozen floors between his penthouse and the guest levels.As it turns out, however, even the Avengers only see what they want to see. Or they see but they don’t observe.Whatever.The important bit is that

by STARSdidathing

A betrayed Tony Stark leaves the Avengers. He's angry and bitter but he's not about to stop being a hero. The problem is that not everyone is happy with his decision.

by SailorChibi

You know those stories where the team wishes Tony didn't exist and they end up transported to a world where he doesn't, and then they come back with a complete change of heart?Yeah, this is what happens afterwards: when the team suddenly starts appreciating a very confused Tony.

by SailorChibi

No sooner has Tony Stark resigned himself to dying in space than Loki shows up on the ship. Loki, who looks about as close to death as Tony feels, has a way to stop Thanos - but it requires a bond. A permanent bond. A bond that will change everything in Tony's life - and the universe.

by SailorChibi

While Steve was running around the world trying to avoid the law, Tony figures out how to save James Barnes.Steve, in all his narrow-mindedness, does not like that one bit.

by NamelesslyNightlock

When forced to decide between the lives of Tony Stark and Iron Man, Steve Rogers chose wrong. Tony is left to deal with the consequences, but it’s not like he’s helpless, and he certainly isn’t alone.

by melonbutterfly

Tony is nonplussed at first when he starts to receive gifts from Loki that Thor informs him are courtship gifts, but he soon starts to return the interest. How could he not when nobody has ever gone to such effort to show their interest in him before, especially someone as fascinating as Loki?

by badwolfrise

Loki knew he was courting death when he decided to attempt to stab Thanos, so he lied to Thor about the sun shining on them again. He knew he was going to die. And he died under Thanos’s arms. But what he hadn’t expected was for him to wake up again, certainly not in the body of his younger self a w

by SailorChibi

When Natasha and Steve show up on Tony's doorstep, it turns out one little piece about their intel is completely wrong.Tony's married, sure. Just not to Pepper.

by STARSdidathing

It was rather ironic that the first mortal to pray to Loki in centuries, was not only an enemy, but a man who had no idea what his words were doing.

by melonbutterfly

The day after the invasion Tony wakes up and his tower is intact again; everything is exactly the way it was before this whole mess went down. It doesn’t take him long to catch up but he can’t figure out why he’s in a time loop – so he does what anyone would: fuck things up while trying to find a wa

by LokasennaHiddleston

A week before Thor's coronation, a drunk and depressed Loki decides he wants a genuine friend of his own. Of course, he turns to magic to solve his dilemma.There are only two problems. First, he is very aware that his current form isn't very lovable or trustworthy. Second, he actually needs a person

by Ana (Anafandom)

Loki hears about Wanda and is not impressed, so he takes it upon himself to do something about the situation. That one action turns out to be very beneficial not only to himself, but to many other people as well (and others not so much).

by Chill_with_Penguins

"Help," Loki says, his voice completely flat, "I've fallen and I can't get up.""Did you just," Stark begins, staring over at him with some sort of horror. He's standing in the kitchen, cradling what appears to be a gallon of coffee close to his chest as if to protect it from Loki's villainy. "No! No

by Takara_Phoenix

Post Civil War, Tony has to build a new team of Avengers.Aside from new recruits, there are also two well-known Avengers that return to Earth – with a ship full of refugees. New and more functional Avengers rise from the ashes of the old and new alliances, new friendships and even new relationships

by ArcticVulpix

As usual, it started because Loki was bored.Is there really any more else to say?

by graveltotempo

“I cannot believe I’m saying this, but we have been saved by the power of Tony Stark’s dick,” said Fury, standing in the penthouse of Stark Tower with the rest of the Avengers and Loki.[...]"To my dick!" then said Stark and everyone looked exasperated even as they raised their glasses and bottles."T

by Limmet

When the time comes to pass sentence on Loki after the events in The Avengers, Odin decides to go for the poetic justice angle. For his attempt to enslave humanity, Loki has his magic and powers bound, and is sent back to Midgard and given over to Tony Stark to be his slave. This was not a turn of e

by STARSdidathing

The blood and betrayal of an Afghanistan cave formed Iron Man. The blood and betrayal of a Siberian bunker formed something else.