Question: Kevin Maguire, is an American comics artist, known for his work on series Captain America, a fictional character appearing in American comic books, published by who?

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Crossbones (comics): Crossbones (Brock Rumlow) is a fictional supervillain appearing in American comic books published by Marvel Comics, usually depicted as an adversary of the superhero Captain America.  Created by writer Mark Gruenwald and artist Kieron Dwyer, the character first appeared in "Captain America" #359 (October 1989).  Crossbones usually appears as an ally of the Red Skull.  He carried out the assassination of Captain America, although a hypnotized Sharon Carter is believed to have fired the fatal shots.

Captain America (William Burnside): William Burnside, also known as the Captain America of the 1950s, is a fictional character appearing in American comic books published by Marvel Comics.  He was created by writer Steve Englehart and artist Sal Buscema in "Captain America" #153–156 (September–December, 1972) as a specifically different Captain America than the Captain America introduced in 1953 in "Young Men" comics.

Kevin Maguire (artist): Kevin Maguire (born September 9, 1960) is an American comics artist, known for his work on series such as "Justice League", "Batman Confidential", "Captain America", and "X-Men".

Captain America: Captain America is a fictional character appearing in American comic books published by Marvel Comics.  Created by cartoonists Joe Simon and Jack Kirby, the character first appeared in "Captain America Comics" #1 (cover dated March 1941) from Timely Comics, a predecessor of Marvel Comics.  Captain America was designed as a patriotic supersoldier who often fought the Axis powers of World War II and was Timely Comics' most popular character during the wartime period.  The popularity of superheroes waned following the war and the "Captain America" comic book was discontinued in 1950, with a short-lived revival in 1953.  Since Marvel Comics revived the character in 1964, Captain America has remained in publication.

Namor: Namor the Sub-Mariner ( ) (Namor McKenzie) is a fictional character appearing in American comic books published by Marvel Comics.  Debuting in early 1939, the character was created by writer-artist Bill Everett for Funnies Inc., one of the first "packagers" in the early days of comic books that supplied comics on demand to publishers looking to enter the new medium.  Initially created for the unreleased comic "Motion Picture Funnies Weekly", the Sub-Mariner first appeared publicly in "Marvel Comics" #1 (cover-dated Oct. 1939) – the first comic book from Timely Comics, the 1930s–1940s predecessor of the company Marvel Comics.  During that period, known to historians and fans as the Golden Age of Comic Books, the Sub-Mariner was one of Timely's top three characters, along with Captain America and the original Human Torch.  Everett said the character's name was inspired by Samuel Taylor Coleridge's poem, "The Rime of the Ancient Mariner".  Everett came up with "Namor" by writing down noble sounding names backwards and thought Roman/Namor looked the best.

Peggy Carter: Margaret "Peggy" Carter is a fictional character appearing in American comic books published by Marvel Comics.  She is usually depicted as a supporting character in books featuring Captain America.  Created by writer Stan Lee and artist Jack Kirby, she first appeared in "Tales of Suspense" #77 as a World War II love interest of Steve Rogers in flashback sequences.  She would later be better known as a relative of Captain America's modern-day significant other Sharon Carter.

Adventures of Captain America: Adventures of Captain America, also known in trade as The Adventures of Captain America: Sentinel of Liberty is a comic book limited series which was published by Marvel Comics.  It was a four issue limited series written by Fabian Nicieza.  The first two issues were drawn by Kevin Maguire while Kevin West was brought in to help out with the third and complete the story with the final issue.

Spirit of '76 (Marvel Comics): The Spirit of '76 (real name William Naslund) is a fictional character appearing in American comic books published by Marvel Comics.  Created by writer Roy Thomas and artist Frank Robbins as part of a World War II-era superhero team, the Crusaders, and patterned on the DC Comics group the Freedom Fighters, the character first appeared in "The Invaders" #14 (March 1977).  The Spirit of '76 was the equivalent of Freedom Fighters member Uncle Sam, originally a Quality Comics character.  In the stories, the character briefly assumed the role of Captain America after the original – Steve Rogers – was presumed dead.  However, he was killed in action.

Maxwell Lord: Maxwell Lord IV, or simply Max Lord, is a fictional character appearing in American comic books published by DC Comics.  The character first appeared in "Justice League" #1 (May 1987) and was created by Keith Giffen, J. M. DeMatteis, and Kevin Maguire.

Captain America's shield: Captain America's shield is a fictional item appearing in American comic books published by Marvel Comics.  It is the primary defensive and offensive piece of equipment used by the Marvel Comics superhero Captain America; he is seldom seen without it.  Over the years, Captain America has had the use of several different shields of varying composition and design.  His original heater shield first appeared in "Captain America Comics" #1 (March 1941), published by Marvel's 1940s predecessor, Timely Comics.  The circular shield best associated with the character debuted in the next issue, "Captain America Comics" #2.  Captain America was created by the team of writer-artist Joe Simon and artist Jack Kirby.

Supporting paragraphs: Kevin Maguire (artist) Captain America
Answer: Marvel Comics