Neo-Viper - Attack on the G.I. Joe Pit (The Rise of Cobra)
"NEO VIPERS are cold blooded commandos whose minds and instincts have been altered to change them into warriors incapable of fear or pain. Their enhanced physical abilities make them inhumanly strong, fast and deadly, and their advanced composite body armor resists most ammunition.
Watch out, GI JOE team! There's an enemy NEO VIPER commando on the attack! This detailed enemy action figure comes with his preferred weapon, a M.A.R.S. Industries D57A extreme environment tactical rifle."