List of Avengers enemies

Stephen John Ditko was an American comic book artist best known for being the co-creator of Marvel superhero Spider-Man and creator of Doctor Strange. He also made notable contributions to the character of Iron Man, introducing the character's red and yellow design.

The Avengers are a team of superheroes appearing in American comic books published by Marvel Comics, created by writer-editor Stan Lee and artist/co-plotter Jack Kirby. The team made its debut in The Avengers #1. Labeled "Earth's Mightiest Heroes", the original Avengers consisted of Iron Man, Ant-Man, Hulk, Thor and the Wasp. Captain America was discovered trapped in ice in issue #4, and joined the group after they revived him. The Avengers are an all-star ensemble cast of established superhero characters from the Marvel Comics portfolio. Diegetically, these superheroes usually operate independently but occasionally assemble as a team to tackle especially formidable villains. This in contrast to certain other superhero teams such as the X-Men, whose characters were created specifically to be part of their team, with the team being central to their identity. The Avengers were created to create a new line of books to sell and to cross-promote Marvel Comics characters.

Quicksilver is a fictional character appearing in American comic books published by Marvel Comics. The character first appeared in the comic book The Uncanny X-Men #4 and was created by Stan Lee and Jack Kirby. The character has since starred in two self-titled limited series and has historically been depicted as a regular team member in the superhero title The Avengers.

The Avengers, or simply Avengers, is a comic book title featuring the team the Avengers and published by Marvel Comics. The original The Avengers comic book series debuted in 1963.

Dr. Henry Jonathan Pym is a character appearing in American comic books published by Marvel Comics. Created by penciller Jack Kirby, editor-plotter Stan Lee and writer Larry Lieber, Pym debuted in Tales to Astonish #27. He returned several issues later as the original iteration of Ant-Man, a superhero with the power to shrink to the size of an ant. He later assumed other superhero identities, including the size-changing Giant-Man and Goliath; the insect-themed Yellowjacket; and briefly, the Wasp. He is a founding member of the Avengers superhero team, and the creator of the robotic villain Ultron. He is also the ex-husband of Janet van Dyne and the father of Nadia van Dyne, his daughter by his first wife, Maria Pym.

Roy William Thomas Jr. is an American comic book writer and editor. He was Stan Lee's first successor as editor-in-chief of Marvel Comics and possibly best known for introducing the pulp magazine hero Conan the Barbarian to American comics. Thomas is also known for his championing of Golden Age comic-book heroes – particularly the 1940s superhero team the Justice Society of America – and for lengthy writing stints on Marvel's X-Men and The Avengers, and DC Comics' All-Star Squadron, among other titles.

Doctor Spectrum is the name of several fictional characters appearing in American comic books published by Marvel Comics. There have been five versions of the character to date—three supervillains from the mainstream Marvel Universe belonging to the team Squadron Sinister (Earth-616) and two heroes from different alternate universes. The two heroes each belong to a version of the team Squadron Supreme, the Squadron Supreme of Earth-712 and the Squadron Supreme of Earth-31916 respectively). Doctor Spectrum is a pastiche of DC's Green Lantern.

Wonder Man is a character appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artists Don Heck and Jack Kirby, he first appeared in The Avengers #9. The character, who was initially introduced as a supervillain imbued with "ionic" energy, fought the Avengers, and, after a series of events, was reborn as a superhero, joining the team against which he originally fought.

Gold Key Comics was an imprint of American company Western Publishing, created for comic books distributed to newsstands. Also known as Whitman Comics, Gold Key operated from 1962 to 1984.

Donald L. Heck was an American comics artist best known for co-creating the Marvel Comics characters Iron Man, the Wasp, Black Widow, Hawkeye and Wonder Man and for his long run penciling the Marvel superhero-team series The Avengers during the 1960s Silver Age of comic books.

Speed Demon is a supervillain appearing in American comic books published by Marvel Comics. Created by Roy Thomas and Sal Buscema, the character made his first appearance in The Avengers #69 as a member of the Squadron Sinister known as the Whizzer.

Peter Jeffrey was an English actor. Starting his performing career on stage, he later portrayed many roles in television and film.

Captain Marvel is a character appearing in American comic books published by Marvel Comics. Created by writer-editor Stan Lee and designed by artist Gene Colan, the character first appeared in Marvel Super-Heroes #12. He is the first character to use the moniker Captain Marvel in the Marvel Universe.

The Squadron Sinister is a supervillain team appearing in American comic books published by Marvel Comics. The Squadron Sinister first appeared in the final panel of The Avengers #69, created by Roy Thomas and Sal Buscema. The team is a pastiche of DC's Justice League.

Hercules Panhellenios is a character appearing in American comic books published by Marvel Comics. Debuting in the Silver Age of Comic Books, the character is based on Heracles of Greek mythology. Since his first appearance, he has been a perennial member of the superhero team the Avengers.

Avengers: The Initiative is a comic book series from Marvel Comics. Written by Dan Slott and Christos Gage with artwork initially by Stefano Caselli, Steve Uy and Harvey Tolibao, the series handles the aftermath of Marvel's "Civil War" storyline. A preview of the title was shown in Civil War: The Initiative.