AU crossover. Tony Stark has known Charles Xavier since Tony was eight and Xavier was his Uncle Charles. Now that Tony’s all grown up, Charles vets his dates. Well, most of them. Except for the ones where Charles brings someone who should really be in jail, not a fancy restaurant.

Eighteen-year-old Tony Stark is the boy genius who woke Captain America, and now he's stuck with him. That's not a bad thing, but between Steve's wide-eyed wonder at the new world and Tony's little fanboy crush, the awkwardness just keeps happening.

The future may be different, with electric lights and telegrams, but the world still needs the Avatar. The Avengers set in the world of Avatar: The Last Airbender. I really can't be more direct than that.

Five times the Avengers pawned kids off on the Jean Grey School.

Jake Jensen is sixteen when he meets Tony Stark at MIT. He's nineteen when he joins the US army, and twenty-four when he becomes a Loser. Becoming a Loser is also when he happens to discover that DADT might apply. But that is not where this story begins. It begins on a cold, winter morning in Massachusetts, when a little girl with hair the colour of cornflakes meets her newborn brother for the first time. (In which there are evil toasters, all-around nerdiness, and ohana ).

Tony Stark resigned his commission in Starfleet five years ago, after a disastrous away mission, and he swore he'd never go back. He just wants to be left alone to build warp engines in peace. But the universe has more in store for him than that, as he discovers when Admiral Fury comes to him with an offer he could never have expected and cannot possibly refuse: first officer and chief engineer aboard the all-new USS Avenger, a starship of Tony's own design. What's more, the Avenger's captain is Steve Rogers, hero of the Earth-Romulan War. Believed dead for over a century, Steve is miraculously alive... and very, very attractive. But nothing is ever easy for Tony. As he wrestles with his secret desire for his new captain and his not-so-dormant fears, another mission starts to go wrong, and Tony becomes aware that Steve has secrets of his own -- and the truth could change everything.