Nyola – A weather-controlling Aztec priestess who previously fought Hawkman. Oom the Mighty – A super-strong animated large statue with magical powers who was an early adversary of Spectre. Ramulus – A green-skinned supervillain with the ability to control plants who was an early opponent of Sandman and Sandy the Golden Boy. Second version Mister Mind (leader)– A two-inch talking worm with telepathic powers and a genius intellect. Adolf Hitler – He and all the resources of Nazi Germany have assisted the Monster Society of Evil. Adolf Hitler was the one who gave the orders to create Captain Nazi. Archibald – A satyr and graduate of the Monster School who helped Mister Mind capture Billy Batson. An army of termites and worms. Artificial Bodies: Artificial bodies Mister Mind could mentally inhabit and which were used to fool Captain Marvel as he searched for Mister Mind on his asteroid base, consisting of: Goat-Man – A humanoid goat creature who was the first recruit of the Monster Society of Evil. A seemingly indestructible robot. A giant purple octopus with a grinning human face. A circus strongman with strength rivaling that of Captain Marvel himself. Benito Mussolini – He and all the resources of Fascist Italy have assisted the Monster Society of Evil. Bonzo – A hunchback human with large eyes and fangs. Captain Nazi – A superstrong Nazi warrior who assisted in the first plot. Crocodile-Men – A race of humanoid crocodiles from the planetoid Punkus. Herkimer – A Crocodile-Man who is Mister Mind's second-in-command and briefly took command of the Society when Mister Mind lost his memory, but later reformed and started working in the circus. Jorrk – The greatest scientist of the Crocodile-Men and one of Mister Mind's three lieutenants, alongside Dr. Smashi and Herr Phoul. Sylvester – A Crocodile-Man and one of Mister Mind's preferred gunners. Dobbin – Mister Mind's seahorse steed. Dome Attendants – Creatures that tend to Mister Mind's undersea base. It consists of a Pig Man, a Goblin, a Werewolf, an Ogre, and a midget submarine captain. The midget was the last of Mister Mind's minions to leave him. Dr. Smashi – A short Japanese scientist and one of Mister Mind's three lieutenants, alongside Jorrk and Herr Phoul. Dr. Hashi – A spiky-haired Japanese scientist. Dr. Peeyu – A tall Japanese scientist. Doctor Sivana – The "world's wickedest scientist". Evil Eye – A green-skinned humanoid monster