Loki is Thor's sister, not his brother. The events of Thor go somewhat differently.

Clint is an omega who isn't interested in mating. Ever. That doesn't mean he wouldn't like a romantic partner, though. Unfortunately, he's never found anyone who was okay with the whole lack of interest thing... but there might be hope yet.

Tony used to think that the 1940s were repressed. Steve's repertoire of racy songs makes him reconsider.

Her name isn’t really Darcy, of course: her true name is something much older and a damn lot more powerful. Norse gods weren't the only supernatural beings in New Mexico when Thor was there.

The first thing Tony says when they come down to breakfast the morning after moving into the Tower is, “So, you two are together, right?”

What it says on the tin. (Including Follow-ups to: Maybe one of these days you can let the light in, and One Of Those Things, and Mrs and Mr Pond..)

The thing that made it so easy to hide was that everyone knew what dragons were supposed to be like. John heard people wonder about Sherlock sometimes, sending him slanting, speculative glances, as they questioned his lineage. But John Watson, who was steady, reliable, even-tempered? He slid right under their radar, just another average human being in a world full of them.

Apparently Supernatural was real, which was presumably why Gabriel was bleeding out onto Richard’s floor. (In which the actors of Supernatural find that reality is stranger and more disturbing than they previously believed, even counting Misha, and an injured archangel discovers that his universe is the subject of a TV show.)

“My high school reunion is on,” John tells Molly. There’s a short pause as she processes this. “That sounds like fun,” she offers. “Do you want to go?” “Oh yes, because that couldn’t possibly go badly. ‘Hello, I’m John Watson, I’m a professional killer.’ ” A Grosse Pointe Blank AU.

After the final Seal is broken, Dean discovers that he's actually Lucifer. He's not really sure how he feels about that.

When Loki attempts to mind-control Tony Stark in the middle of the Chitauri invasion, he unlocks powerful memories and abilities, and Tony realises that he's something greater and more powerful than he ever knew. And so is Steve Rogers, but that's a slightly different problem.