Amazon.com: Mortal Kombat - Xbox 360 : Video Games
Boon Wanted Xbox 360 Exclusive for Mortal Kombat 9 | Attack of the Fanboy
So apparently it was planned to have the Arbiter from Halo series or the general RAAM from gears of war as Xbox 360 exclusive character just like they did with Kratos from
Mortal Kombat (2011) Xbox 360 Fatalities and Babalities
No console exclusive characters for Mortal Kombat X