A Mortal Kombat X modder has had a dig around the PC version's files and made currently unplayable characters playable.
Modder XVermillion published a couple of videos to YouTube, embedded below, showing Rain, Baraka and Sindel in training mode.
You fight these characters during MKX's story, but they are not playable characters - yet. Perhaps they'll be sold as downloadable content at some point in the future.
XVermillion explained his working out in a post on Reddit. Essentially, he tweaked playable character Shinnok to use non-playable character models and movesets.
- There are other files you can change to get stuff like Rain's name under the health Bar but the only files I modded are in the "Assets" folder I believe; there should be 2 associated with Rain (Rain_A.xxx and another one I can't remember but you can just search the folder for Rain).
- Anyway, I backed up the files for Shinnok (the character I'm replacing) and renamed Rain's files to match those associated with Shinnok's 1st costume slot (CHAR_Shinnok_A.xxx and one other, the one that matches Rain's other one) and moved 'em to the folder and overwrote Shinnok's old files with the newly renamed Rain files.
- What you see is just me playing in training mode with what the game thinks is Shinnok but is using Rain's model and moveset.
