Team FC
Initially portrayed as the archenemy of the X-Men, Magneto has had numerous moments where he's allied himself with the X-Men or fought alongside them for a greater cause. His complex motivations often blur the lines between hero and villain.
Bucky Barnes, once Captain America's sidekick, was brainwashed and turned into a Soviet assassin known as the Winter Soldier. However, he eventually regained his memories and has since fought alongside Captain America and the Avengers as a hero.
Venom started as one of Spider-Man's most notorious foes, but over time, the character has evolved into more of an anti-hero. Eddie Brock, the original host of the Venom symbiote, has occasionally teamed up with Spider-Man and other heroes.
Elektra Natchios began as an assassin and adversary of Daredevil. Despite her dark past, she's had moments of heroism, occasionally fighting alongside Daredevil and even taking up the mantle of Daredevil herself in some storylines.
Mystique is a shapeshifting mutant known for her manipulative and deceptive nature. While she's typically portrayed as a villain, she has occasionally worked with the X-Men or other heroes when it suits her interests or the interests of mutantkind.
The Punisher is a vigilante known for his brutal crime fighting methods, often putting him at odds with traditional superheroes. However, his anti-hero status has led him to occasionally ally himself with other heroes, albeit reluctantly.
The mischievous Asgardian god of mischief, Loki, has often been a thorn in the side of Thor and other heroes. However, Loki ended up undergoing significant character development, sometimes fighting alongside the heroes for noble causes.
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