Videos by ComicBook.com
Many Avengers have ended up taking actions that resulted in the creation of their enemies. Being a hero is difficult work, and the path to Hell is paved with good intentions. Sometimes, heroes end up creating their own worst enemies, their mistakes leading to yet another foe to fight. These seven Avengers made that mistake, and created some of the worst villains in the Marvel Universe.
7) Wonder Man

So, this one is going to be complicated, so stay with me. Simon Williams did everything he could do to help his self-centered younger brother Eric, eventually volunteering to be infused with ionic energy and battle the Avengers so the Masters of Evil would break Eric out of dead. Simon became Wonder Man, and died helping the Avengers fight the Masters after a change of heart. Simon would eventually return, and Eric would decide to become his greatest enemy since Simon refused to be his savior every time he did something foolish. This is the origin of Grim Reaper, a villain who has been tormenting Wonder Man and the Avengers ever since.
6) Captain Universe

Jonathan Hickman gave readers a perfect Avengers run, introducing several new characters to the team. One of these members was a new Captain Universe. However, this Captain Universe wasn’t a person given the power of the Enigma Force; instead, it was the Enigma Force possessing a person who had been in a coma for years. It was revealed that Captain Universe was the embodiment of the universe itself, the mother of all. Captain Universe was responsible for the creation of Builders, who would eventually decide to end all life in the universe. Captain Universe’s own children battled against her, with her and the Avengers defeating them.
5) The Hulk

Bruce Banner began experimenting with gamma energy, eventually harnessing it for weapons of mass destruction. An accident transformed him into the Hulk, and he became the strongest one there is. The Hulk mostly fought the US military, but the Hulk would soon gain a rogues gallery. Looking at Hulk’s foes, he actually played a role in the creations of several of them. Banner’s relationship with Thunderbolt Ross’s daughter made Ross hate him, and Banner becoming the Hulk intensified that, Ross’s defeat eventually leading to him to become the Red Hulk. The Leader worked at Gamma Base, and Banner’s experiments would lead to him getting his powers. The same would basically happen to the Abomination, as Emil Blonsky was exposed to gamma because he was spying on Banner.












