The Fantastic Four is a fictional superhero team appearing in American comic books published by Marvel Comics. The group debuted in The Fantastic Four #1 (cover dated Nov. 1961), which helped to usher in a new level of realism in the medium. The Fantastic Four was the first superhero team created by editor/co-plotter Stan Lee and artist/co-plotter Jack Kirby, who developed a collaborative approach to creating comics with this title that they would use from then on. The four individuals traditionally associated with the Fantastic Four, who gained superpowers after exposure to cosmic rays during a scientific mission to outer space, are Mister Fantastic (Reed Richards), a scientific genius and the leader of the group, who can stretch his body into incredible lengths and shapes; the Invisible Girl (Susan "Sue" Storm; later "Invisible Woman"), who eventually married Reed, who can render herself invisible and later project powerful invisible force fields; the Human Torch (Johnny Storm), Sue's younger brother, who can generate flames, surround himself with them and fly; and the monstrous Thing (Ben Grimm), their grumpy but benevolent friend, a former college football star and Reed's college roommate as well as a good pilot, who possesses tremendous superhuman strength, durability, and endurance due to the nature of his stone-like flesh. Since their original 1961 introduction, the Fantastic Four have been portrayed as a somewhat dysfunctional, yet loving, family. Breaking convention with other comic book archetypes of the time, they would squabble and hold grudges both deep and petty and eschewed anonymity or secret identities in favor of celebrity status. The team is also well known for its recurring encounters with characters such as the villainous monarch Doctor Doom, the planet-devouring Galactus, the sea-dwelling prince Namor, the spacefaring Silver Surfer and the shape-changing alien Skrulls.