Viper: Raised from girlhood to be a HYDRA agent, Madame HYDRA rose through the ranks to become one of the leaders of the organization. A deadly combatant, she took the name Viper when she became the leader of the Serpent Squad.

Hydra Elite: The Elite are the ceremonial guards of the subversive organization called HYDRA. Ranking higher than foot soldiers, they are charged with protecting key HYDRA installations as well as high-ranking HYDRA officers.