He used a wrist blaster that could fire poison darts. During the 2017 "Secret Wars" storyline, the Battleworld domain of the Hydra Empire has a group called the Vipers who work for Hydra. They are a group of female assassins that wear Hydra's version of the Symbiotes on their bodies and are led by Venom who sports the same type of Symbiote as the Vipers. The Vipers first appeared with Venom where they attacked the Resistance. While most of the Resistance was killed in the ensuing battle, Venom managed to infect Captain America and Sharon Carter's daughter Ellie Rogers with a Symbiote which slowly started to turn her into a Viper.