IN MK 2 for sega you can play against Ed Boon I never playd VS Ed Boon but I've seen that...
I don know if SMOKE was replaced by him but see what i remeber and its true cuz i have seen it:
One boy was playined on the Portal stage VS Ed Boon - he looks like this : a big head and small body his head was the same like when he apear and say toasty i am not sure if his name in the life bar was toasty man or Ed boon nevermind he uses a spear like Noob Scorpion and Smoke and he also is smoking likw Smoke thats all i can remember but this SECRET was only avalible for sega i thing...