Dragon Ball Z X Avatar: The Last Airbender

Dragon Ball Z X Avatar: The Last Airbender is a crossover fighting game featuring characters from DragonBall and Avatar (and its spin-off). The game will be released for the Playstation 3, Xbox 360, and Wii U.

Gameplay
DBZxATLA is a one-on-one (or two-on-two if you prefer) fighter set in a 2.5-D plane. There are six attack buttons (three for punches, three for kicks), and characters can combine different punches and/or kicks to set up mix-ups or part of a starting combo.

Characters also have access to aerial raves and juggular raves, the latter requiring a specific sequence that varies for each character.

Also welcome is the addition of a technique called Possessed Mode, in which a character turns into a darker, more sinister version of his/herself with a guaranteed speed and power buff (in a 2 vs 2 match, the current point character is sacrificed, making the partner possessed, similar to Pandora mode in Street Fighter X Tekken). However, this state only lasts ten seconds at a time and, if the opponent is not defeated during its duration, the possessed character will automatically be knocked out (also remeniscent of SFxT).

Also worth mentioning, in a 2 vs 2 match, if one teamate is K.O'd, the opposing player automatically wins (a holdover from Tekken Tag Tournament)

Story
300 years ago, an alien race called the Coolers has tried to invade our world, but has since been repelled by an unknown Cherokee shaman. They did, however, manage to leave a beloved relic, the Stone of Possession, on the legendary Spear Pillar (a location from Pokemon, in case you didn't know).

Since then, the Cooler's leader, Schoff, has contemplated a way to retreve it in order to take over the world and its riches.

Today, two factions from this Earth have learned of this relic and are planning to travel to Spear Pillar to retreve the Stone of Possession, each with their own needs and intentions. However, they are not without disaster.

It's been rumored that the Stone causes individuals to turn them into greedy, sinster reflections of their former selves if it senses conflict, but this can be overcome with help of an aquaintance.

While these groups are going the going the round with each other, who will stop Schoff?

Characters
The roster was determined by character popularity and creator choice. There are 20 playable characters, with 10 on each side. On this list, the rivalries are confirmed. All you need to do is find the connection between them.