Im not sure if its true BUT they said Rayman IS A YES(mabye)

So it can be Snake+Rayman+somebody else that we don't know about.

BUT RAYMAN MIGHT NOT BE ON IT SO DON"T KEEP YOUR HOPES UP!!!!

AND heres my list of 3rd parties.

5.Megaman

4.Pac-Man

3.Rayman

2.Bomerman

1.Sonic