19 years have passed since the end of the Principate War and the world has lived in peace since then. However, peace is a lie and the emergence of the unthinkable brings a nation knowing nothing of war to the brink of it. Harry must do his duty as the Avatar to preserve peace and balance lest a nation be plunged into civil war. The world once again needs Avatar Harry one more time.

Gryffindor, Ravenclaw. Hufflepuff. Slytherin. Long ago, the Boy-Who-Lived disappeared. No-one knew where he'd gone until, thirteen years later, a contest between three nations brought him home: however, the Boy-Who-Returned was not what they expected. Dark Superpowerful Harry/Zuko

Harry was woefully unprepared for the Tri-Wizard Tournament. Magic decided to do something about it. Harry would be the answer to many problems. First, he had to survive a Fire Lord, a Hundred Year War and an excitable 12 year old with ancient powers. Rated M for safety. Pairings to be added. (FF net version)

Aang, Katara and Sokka were more than suprised when a green-eyed firebender arrived to save them from getting captured by Zuko, they were even more suprised when they learned that he could also bend four elements. Now joining Team Avatar was Harry Potter, adopted son of the fire lord. Harry/Azula pairing, no regular HP magic (with exceptions), only bending.

Draco Malfoy, the Malfoy family heir, feels entitled to an easy life. Azula Ryland, favored child of the revered Fire Lord Ozai, has the impression that she was born lucky. Initially forming an alliance to further their own ambitions, Draco and Azula find themselves drawn to one another, both understanding the burden of trying to meet their respective fathers' high expectations.

Zuko was eight when he first met a dragon. Little did he know that day would forever haunt him, making him question everything he knew about his honour and his family legacy. Pre-Slash!

Harry Potter and his friends are minding their own business, when a boy with tattoos materializes in front of them. The Avatar and his friends are trapped in the HP world, and now Harry, Ron, and Hermione have to help them pass as wizards...crap.

Y/N and Snape’s holiday at Malfoy Manor is interrupted as Dumbledore once again has a mission for them. Y/N and her friends, Laura and Vera, will join Snape, Lucius, the Trio and Draco on a mission to the ATLA dimension where Aang and his friends need help defeating Fire Lord Ozai and the rest of the Fire Nation.

Fannatica is a game show hosted by Briana, a fictional character. Each episode of Fannatica is based on a random fandom different every time. In episode one, Bellatrix and Azula fight to the death. Rated T to be safe. Violence.

Following the events of the Northern Water Tribe, the gang is now on their way to the Earth Kingdom to look for an Earthbending teacher for Aang. The war planning takes a few extra turns, especially by the appearance of another royal, hell-bent on capturing their arses.

A duel? A one-shot? An Experiment, Mayhaps one you wouldn't enjoy? Mayhaps one you would? Take a look if you so desire. (Update: As of now there is no plot, this is mindless writing.)

To most of the world, Tom Riddle is the perfect Avatar: diplomatic and prodigious, the pride of the Fire Nation. But Hermione Granger—healer, secret bloodbender, and member of a society that's tracked Riddle's moves meticulously—knows the truth. She knows what Riddle's planning once he masters the Avatar State. At the next full moon, she's going to make sure that never happens.

The adventures of Team Avatar in a Hogwarts AU. So much happens and it's only Year One! What will happen I wonder?

For 33 years, since the end of the Fire Utopia, the world has known peace and balance. Even the events 10 years prior did not threaten this. However, events are about to be set in motion that will bring the world to its knees in the coming years. Once again the world will need the Avatar to save it. Harry must step up once more but this time the threat is much closer to home.

Zuko managed to survive one year in the world of Wizards, but his mission is far from over. Strange and dangerous happenings are going on at Hogwarts. But not even Hermione can answer Zuko's question: How do you manage to lose an entire chamber? Or that should have been the blurb, but Dobby made a mistake, and pissed off the wrong Replacement Hero. (Crack Treated Seriously)

Challenge

I know it says year 3 but this is the beginning of this story, OC in the story.

Harry manages to grab onto Sirius before he falls into the veil. But instead the both of them drift away. Harry is offered the choice to move on with his Godfather and he accepts. A few friends simply cannot let him go though and follow after him. Along with one person who is just trying to run away. Their magic is different now. They each feel a strong pull one element or another.

A 4th-year Tom Marvallo Riddle messes up his horcrux ritual, and ends up possessing and then merging with the Last Airbender. How will the 4 nations achieve balance with an aspiring Dark Lord for an Avatar?

Tired of her posh treatment after the war, Iris Potter is helped by the Goblins so she could leave and live a life for herself as herself and not the Woman-Who-Conquered. Only she lands near the only tribe in the South Pole. How is her destiny going to change now? Fem! Harry.

After an 'incident' during his sixth year, Severus Snape is sent to another world and is forced into a war that isn't his own. While searching for a way back, Severus journeys down a path of 'self-discovery', forcing him to reflect on his life and question everything he's ever known - 2nd installment to my Severus Snape Series!

In Azkaban Prison, on June 21st, 1994, Bellatrix Lestrange gave birth to two children, Zuko and Azula. They were immediately taken out of their mother's custody, and in due course, some years after the war, they come to Hogwarts.

Aang has finally found an Earthbender master to teach and train him. For now, everything feels like it's going well, despite everything that's happened. Except the training doesn't seem to be going well. While Aang trains, Katara goes missing and her situation continues to get worse and worse. What do these people in black cloaks want?

When the world they knew and loved vanishes in blood and despair Harry, Hermione, Luna and Draco must leave and form new lives in a new world. But what happens when they learn their new chance at life is in danger of following the same path as the last.

After being pushed through the veil, Harry Potter's spirit travels and is reborn as an airbender during the Hundred Year War. Harry/Zuko, A/B/O. Top/Alpha Harry.