and wanting the whole world to be like him. Kirby went on to say that "Doom is an evil person, but he's not always been evil. He was [respected]…but through a flaw in his own character, he was a perfectionist." At one point in the 1970s, Kirby drew his interpretation of what Doom would look like under the mask, giving Doom only "a tiny scar on his cheek". Due to this slight imperfection, Doom hides his face not from the world, but from himself. To Kirby, this is the motivation for Doom's vengeance against the world; because others are superior due to this slight scar, Doom wants to elevate himself above them. Stan Lee's writing typically showed Doom's arrogance as his constant downfall, and how his pride leads to Von Doom's disfigurement at the hands of his own machine, and to the failures of many of his schemes. While the Fantastic Four had fought various villains such as the Mole Man, Skrulls, the Miracle Man, and Namor the Sub-Mariner, Doom managed to overshadow them all and became the Fantastic Four's archnemesis. During the 1970s, Doom branched out to more Marvel titles such as Astonishing Tales, The Incredible Hulk, and Super-Villain Team-Up (1975). Beginning with issue #42, he also had appearances in Marvel Team-Up (February 1976). Doom's origin was also a feature in Astonishing Tales when his ties to the villain Mephisto were revealed. In the book Superhero: The Secret Origin of a Genre, Peter Coogan writes that Doom's original appearance was representative of a change in the portrayal of "mad scientists" to full-fledged villains, often with upgraded powers. These supervillains are genre-crossing villains who exist in adventures "in a world in which the ordinary laws of nature are slightly suspended"; characters such as Professor Moriarty, Count Dracula, Auric Goldfinger, Hannibal Lecter, Joker, Lex Luthor, and Darth Vader, also fit this description. Sanderson also found traces of William Shakespeare's characters Richard III and Iago in Doom; all of them "are descended from the 'vice' figure of medieval drama", who address the audience in monologs detailing their thoughts and ambitions. 1980s–1990s In 1976, Marvel and DC Comics collaborated on Superman vs. the Amazing Spider-Man, and seeking to replicate that success the two companies again teamed the characters in Superman and Spider-Man in 1981. Marvel editor-in-chief Jim Shooter co-wrote the story with Marv Wolfman, and recalled choosing Victor Von Doom based on his