How to get the pre-order bonus of Mortal Kombat 11 on the Nintendo Switch?

Mortal Kombat 11 is coming out soon and that too for the Nintendo Switch. You get as a pre-order bonus the fighter Shao-Kahn. But how does that work on the Nintendo Switch?

I do not know anything about the bonus, but if you want to pre-order it, you go to the shop as usual and look under it soon.

I never buy anything in the shop if the game is also a card. I also want to buy this game as a map, but I do not know how it will work with this version.