Marvel Comics is an American comic book company owned by Marvel Publishing, Inc., a subsidary of Marvel Entertainment, Inc.
Marvel counts among its characters such well-known properties as Captain America, Spider-Man, the X-Men, the Fantastic Four, the Hulk, Thor, Iron Man, Doctor Strange, Blade, the Punisher, Daredevil, Ghost Rider and many others. Most of Marvel's fictional characters are depicted as inhabitants of a single shared reality; this continuity is known as the Marvel Universe.
The comic book arm of the company was founded in 1939 as Timely Publications and was generally known as Atlas Comics in the 1950s. Marvel's modern incarnation dates from the early 1960s, with the launching of Fantastic Four and other superhero titles created by Stan Lee, Jack Kirby, Steve Ditko, and others. Marvel has since become one of the largest American comics companies, along with DC Comics.
For more on Marvel comics, please visit Marvel's Wikipedia page.