Mortal Kombat X will have console exclusive characters, that's a fact. Despite how many gamers may feel about the fighting game giving special characters to different consoles, creator Ed Boon let the cat out of the bag in a recent interview with IGN at Gamescom 2014.
In the IGN interview, Boon talked about the story of Mortal Kombat X and how it fit into the grander picture of the MK universe. MKX will take place in different points of time up to 25 years from MK 9 and will consist of flashbacks and situations that take place in the present and future.
But perhaps the most interesting tidbit from the interview was Boon admitting to DLC post-release and console exclusive content. Here's an excerpt from the IGN interview that confirms this:
All's not lost if your favourite doesn't make the cut, however. Boon promised the roster would be expanded with DLC post-launch, as well as revealed that yes, console-specific exclusive fighters would again be back.
Boon has previously teased that characters outside of the Mortal Kombat X franchise like Kratos and Freddy Krueger could be popping up in the fighting game so it would reason to believe that these third-party characters would be part of the console-exclusive content.
This type of marketing is not new, if you recall Soul Calibur 2 did the same console-exclusive tactics with the Gamecube, PS2 and Xbox. Link from Legend of Zelda was available only on the Gamecube version, while Spawn appeared on the Xbox and Heihachi from the Tekken series for the PS2 game. They did the same for Soul Calibur 4 with Darth Vader and Yoda from Star Wars but only for Xbox 360 and PS3.
So Mortal Kombat X will include third-party characters but perhaps instead of DLC they will be only available on respective consoles. Or it can have a specific character be a console-exclusive and then release them on the other console as a DLC. Or if Netherrealm Studio wants to really be creative, it can have a veteran fighter like Johnny Cage and Sonya Blade be console-exclusives and have main story be a tad different for each, with Cassie Cage being the bridge.
Either way, we'll find out when Mortal Kombat X is released for last-gen, next-gen consoles and PC in 2015.