How do you get shao kahn and goro and kintaro in mk9 Xbox 360?

In Mortal Kombat 9 (MK9) for Xbox 360, you can unlock Shao Kahn, Goro, and Kintaro by completing the game's Challenge Tower mode. Specifically, you need to finish all 300 challenges in the tower to access these characters. Alternatively, if you have the "Kombat Pass," you can also unlock them through downloadable content (DLC).