There is a Dragon Ball Xenoverse Super Pack on newer consoles. Do not buy that. It is not compatible with the Xbox 360 version. The Xbox 360 DLC is labeled specifically as "GT Pack 1" (320 Microsoft Points / ~$4) and "DLC Pack 3" etc.
Why? For many, it was the first time they could create their own Saiyan, Frieza-clan, or Namekian warrior and rewrite the history of the Dragon Ball universe. dragon ball xenoverse xbox 360 dlc best
These two packs contain 90% of the "meta" moves and characters. With SS4 Gogeta (Pack 2) and Future Gohan’s moves (Pack 4), you can complete every mission in the base game with ease. There is a Dragon Ball Xenoverse Super Pack