A marine, he'd just shoot a knight in the face, or throw a grenade, or neck snap him, or something cool like that.
PS: a knights armor isn't bullet proof, that's why they stopped being produced, they had to many faults in the shell, and that allowed bullets (muskets at the time) to penetrate and shatter the armor.
Vikings are much stronger, but Samurais are faster. Also Samurais aren't afraid to die so probably Samurais.
the vikings
bears losers
Cowboys
Sonic would win the fight, but sora would put in one hell of a fight.
John cena would win in a fist fight an 50 cent would win in a in a gun fight
I would win.
In an all-out fight (not race) a bear would win. In a race of speed, obviously the cheetah would win.
pacman would win and they are going to fight in may 2012
I think that Lady Gaga would win that fight!
Vikings
a lot