maybe you havent change your clan since you started this game. the clan who has the most cards in a fight will have the background. for example,
the background of the Uppers is the building with the Uppers sign on it.
the background of allstars is the stadium.
the Freaks is the circus with the big clown face.
the sahkrom is the building like tower with many sahkrom signs on it.
so observe it...
Urban Rivals | Free Online Manga Trading Card Game | TCG | MMO
The Urban Rivals team is made by lovers of all kind of Collectibles Cards Games and Trading Cards Games like: Magic the Gathering, Dominion, Vampire, Yu-Gi-Oh!, Pokemon, Wakfu TCG, Assassin Creed Recollection, Shadow Era, Kard Kombat and Might & Magic Duel of Champions.