Umm jade and smoke were never playable on any version of mk2 including but not limited to the GB version.You could maybe find a hacked version of the game but thats about it far as i know.There could be game genie codes for the game to but I don't remember any of them that would let you do what you want.

I got some CWCheat-Codes for MidwayArcadeTreasures(MK1,MK2,MK3)for PSP, where you can chose all Charecters (hidden characters may hang the game), if you want them