HYDRA

"Hail, HYDRA! Immortal HYDRA! We shall never be destroyed! Cut off a limb, and two more shall take its place! We serve none but the Master—as the world shall soon serve us! Hail HYDRA!"

- The HYDRA Oath

HYDRA is a terrorist organization.

Marvel Cinematic Universe
Main article: HYDRA (Marvel Cinematic Universe)

Various

 * Red Skull (Founder)
 * Baron Wolfgang von Strucker (Supreme Hydra)
 * Baron Zemo
 * Baron Zemo II
 * Viper (Madame Hydra)
 * Arnim Zola
 * Kingpin
 * Kraken
 * Grim Reaper
 * Silver Fox
 * Fixer
 * Silvermane
 * Richard Fisk
 * Silver Samurai
 * Gorgon
 * Crossbones
 * A.I.M.

Amalgam version

 * Green Skull (Leader)
 * Baron Zero
 * Madame Cat
 * Nuke
 * Ultra-Metallo
 * Major Zemo