King... of course it's going to be Shao Kahn. I considered Onaga, but who besides MK fans really know who the hell Onaga is?

Queen... no question it's Queen Sindel.

Jack... Not because he's Prince Goro... but because Jacks were originally called Knave (meaning a male servant of royalty). Goro is definitely a male and servant to Outworld.

There's no Joker... instead it's Shao Kahn's tool bag sorcerer, Shang Tsung. I really considered making Shang Tsung the Jack instead, but I couldn't find anyone else that would fit the roll of Joker. I used two different pictures for Shang Tsung since in a standard playing there are two jokers. A black and a red.

As soon as I find a website where I can customize my own playing deck, and I figure out a cool MK design for the back of the cards, this will become reality. I will upload pics as well of course. I made versions for all suits, but I didn't see the point of uploading them all when it's the same character.