The Tarisian Alien and Outcast Alliance was a coalition between the aliens of Taris and the outcasts of its Undercity. It formed in 3,726 BBY during the Second Tarisian Uprising. The TAOA overthrew the government of Taris and killed many of its human population. The aliens, tired of centuries of discrimination, and the outcasts, also fed up with the samething, decided to help throw a coup and give Taris to the Triple Tsad.