Marvel
Has two daughters by the name of Gamora and Nebula
Thanos
The Nemesis of Professor X
Magneto
A part of The Flash's Rogue Gallery, he uses a cold gun to freeze his enemies
Captain Cold
Her real name is Caitlin Snow and is usually a villain for Firestorm
Killer Frost
Has a Live Action and Animated movie based on them and includes villains like Deadshot, Harley Quinn and Captain Boomerang
Suicide Squad
This Bird villain goes by the name of Adrian Toomes
Vulture
The Alleged Daughter of Loki and is the Goddess of Death
Hela
A pyromaniac super-villain who fights Batman. Formerly a visual effects expert working in the movie business
Firefly
The reason behind the death of Superman
Doomsday
Ringmaster, Bruto the Strongman, Fire-Eater, Clown,Teena the Fat Lady, Fifi and Great Gambonnos are members of this villainous team
Circus of Crime
Any moves you use on him, he can automatically learn and use back, Also debuted in Avengers #195 (May,1980)
Taskmaster
There are 7 men who have been this villain. The current being Roderick Kingsley
Hobgoblin
The Leader of the Orange Lantern Corps
Larfleeze
He is trapped in the Land of the Unliving which he lords over and is the leader of the Black Lantern Corps
Nekron
Conceived as a new incarnation of the Masters of Evil and were initially formed by Baron Zemo
Thunderbolts
Moon Knight's Arch Enemy
Bushman
She can shape shift into a Dragon and is one of the primary villains of the A-Force
Countess
Fighting alongside Gizmo, Mammoth, Psimon and Shimmer she is primarily a member of the Fearsome Five
Jinx
A super-villain who only speaks in sound effect words and his own name. His origins are mysterious, but he uses expertise in martial arts to kill super-heroes
Onomatopoeia
Debuted in Justice League of America Vol 2 #8
(June, 2007) and has the leader of Mister Mind
Time Stealers
The Son of Mephisto and former member of the Hellfire Club
Blackheart
Debuted in Black Knight #1 (May,1955) and is the Half Sister of Arthur Pendragon
Morgan le Fay
Was initially introduced as an adversary to Superman before becoming a main antagonist for DC Comics' the "Our Worlds at War" crossover
Imperiex
The ruthless tyrant ruler of planet Kalanor, he possesses incredible mental powers in addition to his great strength and intellect and enemy to the Justice League of America
Despero
The Name of the team led by The Shredder (TMNT)
Foot Clan