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He crafted two electricity whips powered by the same arc reactor design as Iron Man`s suit.
When Tony Stark`s parents died this man became his mentor/buisness partner later to turn on him and build his own version of the Iron Man suit to defeat him.
After his research got rejected by Tony Stark, this man developed a regeneration serum called Extremis that also allowed him and his minions to control their body temperature and are able to go so hot they can melt metal just by touching it. He can even breathe fire.
He was the founder of HYDRA. This man was given an earlier version of the same serum that gave Captain America his powers however it was not ready and it made him even more evil and insane than he already was. Along with some other effects.
The Red Skull
This HYDRA scientist designed most of the advanced, tesseract fuelled weaponary used in WW2 and is the creator of the Winter Soldier program. He later uploaded his intelligence into a computer system and re-established HYDRA almost seventy years after the war.
This special ops commando for the British Marines went out on loan to America to General Thaddeus Ross to try to help capture the Hulk, until he was injected with Bruce's blood causing him to transform into a huge monster.
The adopted brother of Thor, this master of magic is mischievous and chaotic. Originally from Jotunheim, he has used the bifrost to try to destroy a planet, attempted to take the throne to Asgard and invade Earth with an army of aliens called the chitauri.
The King of the Jotuns, or frost giants as they are more commonly known, this creature waged war on Earth when the vikings were around but lost as the Asgardians came and defended it. This then provoked him to try to assasinate Odin in his sleep.
Armed with an infinity stone called the aether, this dark elf wished to destroy and annihilate all of the stars and plunge the universe into darkness thoughout the nine realms but was stopped by Thor and his friends.
This dark elf was a lieutenant until he transformed himself into a raging monstrosity in order to start the attack on Asgard. This nearly invulnerable creature is so powerful that he almost killed Thor until he got sucked into one of his own black hole grenades.
This artificial intelligence created by Hank Pym, is a devastating robot that can travel through the internet and control multiple robotic devices and bodies.
This man can control the mind of people just by talking to them and enjoys using powered people such as Jessica Jones to do his evil bidding.
This man is bald, large and rich. He evaded capture for many years by bribing a large amount of the police force. He is a cold-blooded sociopath who violently murders innocent people without a second thought.
She is a love interest of Matthew Murdock but her violent nature and mercenary like lifestyle divided the two. She is a deadly assassin and very skilled in hand to hand combat.
This man was mentored by Hank Pym but when he found out that Hank had created the Ant-Man suit he was enraged that he wasn't told or included. He felt so betrayed that he made his own design that could fly and shoot lasers to defeat him.
This Kree extremist was disgusted by the peace treaty between the Kree empire and Xandar, as Xandarians killed his parents and grandparents. When he found an infinity stone, he went to Xandar to destroy it but was stopped by the Guardians of the Galaxy.
Ronan the Accuser
This Mad Titan rules over the distant regions of space and commands the huge army of the chitauri. His main objective is to gain all six infinity stones. In this quest he has had dealings with the Avengers and the Guardians of the Galaxy.
This HYDRA terrorist tried to destroy the Avengers after they destroyed Sokovia, his hometown. He did this by tearing them apart from the inside. First he framed the Winter Soldier for the murder of Black Panther's father. This caused Captain America to defend his friend against the police and the other Avengers. Then after that he showed Iron Man footage of Winter Soldier killing Tony's parents. This caused Iron Man to start trying to kill Bucky and again Steve defended him.
This opportunist used to be a HYDRA agent within S.H.I.E.L.D. but when they failed he narrowly escaped and became a mercenary. He is a very skilled hand to hand combatant and has expensive, military-grade weaponry.
The leader of a mutant group called the Inhumans, this woman has the ability to drain other peoples life force, giving her unlimited age.
This man has the ability to absorb the properties of what he touches, becoming that substance. Originally a boxer, he was captured and brainwashed by HYDRA and used as a weapon.
Adopted sister of Gamora, this cyborg assasin aided in the attempt to destroy Xandar but was stopped by the Gaurdians of the Galaxy.