It seems it is possible now. I tried to mod it but was doing it wrong, I was looking in the wrong files. The user “blesner” from guru3d seems to have done it right and released the mod. I’ve done my own testing on it and I’ll tell you that Kratos mod is far from being 100% at the moment. Here are the download links for the Bosses mod:
Download from: [ Mediafire ] , or
Download from: [ Mega.com ]
Download Ver.2: [ Mediafire ]
[UPDATE: This is version 2 which adds ending animation for All 3 bosses and many more things, such as better portrait images for the bosses on select screen. Get this one if you’re interested in these, otherwise just get the old one.]
Installation is simple, copy the files over the original files (don’t forget to make backup!) in your game directory. The mod has no side effects or crashes and does NOT replace any of the other characters. The 3 bosses – Goro, Kinataro and Shao Kahn are added to the list of existing characters so you do not need to worry about losing any other characters when using this mod. If you’re experiencing any problems or have any questions, feel free to comment below or contact me.