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.

“I don’t understand why everyone is so obsessed with sex!” Loki burst out. "There are far more interesting things."

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 if Castiel had taken a different vessel?

Discovering that you have some kind of angel-marriage, soulbond-thing to your nerdy angel friend kind of forces you to re-evaluate your relationship. In Dean's case, this involves freaking out and massive fail.

Years later, Tony meets Harley Keener at a science and engineering fair.

“You’re Captain America!” I said, because he was. “Uh, hulloooo, standing right here,” Tony told me. He was using his obnoxious voice. “I know you’re there,” I said. “But Captain America! You didn’t tell me Captain America was going to be here!” A sequel to 'A Connection Is a Thing Which Requires Maintenance.'

One rainy afternoon Tony gets home to find a wet-haired child in an over-sized bathrobe sitting on the penthouse couch, watching cartoons. “Um, what,” says Tony. “Oh, hey,” Harley says, noticing him. “JARVIS showed me where to go. He told me to leave my clothes in the bathroom so they could dry, and said I could borrow one of your bathrobes. You have a really big TV, you know that?”

Gabriel has a way out, if he can just get the gods on his side.

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.

Mutants have been extinct since the Eugenics War. But then, Jim's the exception to everything.

Looking at the contemplative expression on Lucifer's face, Sam thinks that this has the potential to be either very bad, or completely awesome. Two humans and two archangels in the Cage.