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.

From the other end of the ship, panting as though he has run from the depths of his workshop, Usopp is the next to let out a scream: “Why is there a SHARK ON THE DECK!?”

Shikamaru squints at him out of one eye. “Omoi,” he says, exasperated. “I'm going to be the first Avatar to ever throw the world out of balance,” Omoi says. “I'm going to cause—” “—me to go prematurely bald,” Shikamaru interrupts, and reaches up to grab his wrist, dragging him down onto the blanket next to him.

When Boba shows signs of a very old ability from his mother's side of the family, Jango puts out a call to his mother's homeworld to find him a teacher, and to recruit two new trainers to join the Cuy'val Dar. Hakoda assumes it will be an easy way to earn a few extra credits and help his tribe. He's very, very wrong.

Not the Pokémon AU you asked for but the one you’re getting anyway. Featuring: full time gym leader and local cryptid Zuko, badge challenger Sokka, and Katara who can only look at so many memes before she flips.

From the other end of the ship, panting as though he has run from the depths of his workshop, Usopp is the next to let out a scream: “Why is there a SHARK ON THE DECK!?”