It's Venom. (unless they're being real weird about how they're crosspromoting this.) His solo book has a variant cover and now that we know it's 14, we know some characters are getting 2+.MvC 2 character is male, not from X-Men or F4 so these are the options:
Blackheart
Venom
Thanos
War Machine
Captain Commando
Nash
Anakaris
Dan
Dhalsim
Guile
Hayato
Jin
Ken
SonSon
Zangief
Only Q is if any of the S1 DLC characters got a cover as well. But the first 14 should be easy to figure out.