srankmissingnin
Hand to hand only, Viper's guns, poisons and short ranged teleporter are MIA for this fight. So who wins? I have my money on Viper.
http://en.wikipedia.org/wiki/Viper_%28Marvel_Comics%29
http://en.wikipedia.org/wiki/Onyx_(comics)
http://en.wikipedia.org/wiki/Viper_%28Marvel_Comics%29
http://en.wikipedia.org/wiki/Onyx_(comics)