After investigative journalist Eddie Brock (Topher Grace / Tom Hardy) becomes the host of an alien symbiote, he develops superhuman strength and an ultra-violent alter ego, becoming Venom. Brock is the second human that the alien symbiote bonds with, Peter Parker being the first, and soon Venom becomes one of Spider-Man’s greatest arch-enemies.

The Scarlet Witch was originally part of the Brotherhood of Evil Mutants, along with her brother and father. She has the ability to manipulate probability and reality through her hexes. Though she used to fight against the X-Men, she later switches sides to become a key member of the Avengers.

In the Marvel Comics, Matt Murdock is Daredevil, a blind lawyer turned superhero. After he initially makes do with a homemade black suit, he upgrades to this red costume that we’re all much more familiar with.

In the Netflix original series Daredevil, Elektra Natchios (Elodie Yung) drops in on Daredevil, with whom she clearly has a history. A highly trained assassin, she wields a pair of sais as her trademark weapon.

In Jessica Jones, Killgrave or Kilgrave (David Tennant) is the Purple Man, nemesis to Jessica Jones and the Daredevil. Born Kevin Thompson, his superpower allows him to verbally control nearly all those around him, which makes him one of the toughest villains to take down.

In X-Men Origin: Wolverine, Sabretooth (Liev Schreiber), real name Victor Creed, is a mutant with animal-like abilities like retractable claws, regenerative healing, and enhanced senses… much like his younger half-brother Wolverine.