Cobra Viper
- Cobra Vipers are humans from the G.I. Joe portion of the Generation 1 continuity family.

Cobra Vipers are your typical grunts: numerous, anonymous and not very skilled. They form the backbone of Cobra's infantry forces.
The only Cobra Vipers whose names are known are Percy and Agent Smith.
Fiction
Marvel Comics continuity
Marvel Generation 2 comic
After a devil's bargain with the Decepticon leader Megatron for Cybertronian technology, Cobra Commander ordered his Vipers to take the booty to safety before someone thought to reclaim it. Unfortunately for Cobra, someone did. The Protectobot named Hot Spot fought his way through Vipers riding Detonators and HISS tanks to prevent the terrorist organization from taking innocent lives with Autobot tech. Snake-Eyes and the Joes team jumped in to assist Hot Spot in the recovery op, and the Vipers ultimately received nothing for their troubles, as the badly-wounded Hot Spot even set his self-destruct sequence to keep his own remains out of their hands. All or Nothing!
G.I. Joe vs. the Transformers continuity
A single Cobra Viper was present when G.I. Joe busted the Dreadnoks for dealing in Cybertronian hardware in Boston. He tried to fight back using a heavily armed and armored car, but his toys was quickly taken away from him by Snake-Eyes and his mech suit. The Viper was subsequently interrogated on Cobra's role in these illegal sales.
Several Vipers, including Percy, were present as Cobra tried to remotely hack into Teletran 3. This ended badly, as a G.I. Joe assault on the complex damaged their computer and warped everyone present to the planet Cybertron. Furthermore, it warped several Cybertronians into various points in Earth's history, causing a corruption in the timestream that threatened to destroy the Earth. Cobra and G.I. Joe were forced to join together, forming four teams that were sent through time and space to save their world. G.I. Joe vs. the Transformers II #1 Percy ended up on the same team as the Baroness, Beachhead and Roadblock, and helped retrieve Optimus Prime and the Stunticons from 1930's Chicago. G.I. Joe vs. the Transformers II #2 Another Cobra Viper, who went unnamed, was put in a team with Dusty, Shipwreck and Gung-Ho, who saved the day by bringing back the Dinobots from prehistoric Earth. G.I. Joe vs. the Transformers II #4
Some Vipers were later seen guarding the Terrordrome in Siberia. The Art of War #5



