They thought the war was over with the defeat of the Fire Lord. However the powers that be, looking from outside decided that their struggle was only just beginning. Former Fire Lord Ozai, now made into a demon of pure fire, seeks not to rule a world that is reborn from the ashes but to burn it down to spite those who thwarted him, starting with the Avatar and his son.

Water, Earth, Fire, Air. Long ago the four kingdoms lived in peace, then everything changed when the Gods left behind a damaged Remnant, only the Avatars the guardians of the world kept the balance, but when dark clouds gathered, they vanished. Centuries have past and they became a legend... Until now. (Image belongs to me) (Sorry there are no ATLA or LOK characters... sorry again)

After her defeat at the hands of Katara, Azula, former Fire Princess of the Fire Nation, unexpectedly saves her brother from certain death. Seeing her action as a sign of redemption, Agni, the Spirit of Fire, sends Azula to the world of Remnant to act as it's Guardian and Champion, much like the Avatar in her world. (Azulax?)

Un crossover desechado entre Avatar: The Last Airbender y RWBY. EN ADOPCIÓN.

Two fierce fiery females with sinister goals enter a heated battle! Whose fire will be able to burn the longest?

Waking up in a strange world, Ruby must find her teammates, and find a way home, with some help from a couple of friendly strangers along the way

Among other things, Weiss dreams of fire. "If she died, it happened when she was seventeen," Weiss says. "I think she might be haunting me."

Remnant is in chaos. Fifteen years ago, the Avatar disappeared, leaving the world exposed to the creatures of Grimm. In his absence, the Fire Nation stepped forward to protect the rest of world... by taking it for themselves. But a new Avatar has revealed herself and she is the key to a brighter future - but can Ruby restore balance to the world? (ON HIATUS)

Fire, Earth, Water, and Air. These are the four elements man controls in the world of Remnant, and only a select group of benders are deemed strong enough to battle the Spirits or Grimm threatening balance in the world. These are the adventures of a few of those benders, particularly the members of Team RWBY and Team JNPR. (Prompts are welcome)(Now featuring ATLA characters)

a couple of folks from other lands find themselves in a bar in a strange place. See what happens when fighters get fiesty and fist start flying. Enough alliteration have fun

AU Crossover, clearly. This story begins during an alternate ending of "Zuko Alone", and includes RWBY character Adam Taurus. Adam is a firebender, but not like any that most would know and a certain princess is a fan of this. What will happen when the two of them cross paths? Well the best way to find out is to just enjoy the ride and read along.

In the wake of the last Great War, the people of Remnant has experienced an almost unprecedented age of peace and prosperity, but it has also borne a loss, a loss several decades in the making. The Avatar, master of all four elements and customary guardian to the world, has been waning in strength over a string of successive reincarnations passing away unrealized.

Four Elements. Four Girls. An adventure ten thousand years in the making. In a world of both Spirits and Grimm, human beings possess a remarkable gift called bending, able to manipulate one of the four elemental powers: Air, Water, Earth, and Fire. This is their story. The story of Ruby, Weiss, Blake and Yang. The story of Team RWBY, students of Beacon. And the Legend of Ruby Rose.

[Hiatus] After ending the Hundred Year War, Aang has had so many new adventures that he had almost forgotten about his strange trip to Remnant. But when worlds truly collide, what will happen to Team RWBY, Team Avatar, and the rest? Set after the Avatar comics and during Volume 3 of RWBY. Canon pairings (Korrasami referenced). Minor character death.

The spirits have interfered with destiny, leaving one of the greatest of them all with only one choice. To tear Zuko and his uncle away from their world, and throw them into another.

The lion turtle's gift of energybending was instantaneous . . . or was it? But what will a boy who feels conflicted about killing his worst enemy think of a world where the Grimm are killed on sight? And what dark secret lurks in the Emerald Forest? Set immediately after Volume 2 of RWBY.

Long ago, an old hermit gave powers beyond thought to four traveling maidens, who had shown him kindness. And every year, the four would visit the old hermit, and for one such year, the hermit decides to tell them a story…

The water tribe has fallen and it's Chief is dead. His daghter, although filled with anger, decides that she needs help to reclaim her throne so she travels southeast. Meanwhile a group of young benders, carrying vital information, are heading in the same direction, towards Ba Sing Se. Will this group of young heroes be able to save the water tribe, and possibly the world?

Okay, Sokka is a bit clumsy. But is he really clumsy enough to fall into the Avatar's vortex of the elements? Straight into another world?