Dave Cockrum

David Emmett Cockrum (; November 11, 1943 – November 26, 2006) was an American comics artist known for his co-creation of the new X-Men characters Nightcrawler, Storm, Colossus, and Mystique, as well as the antiheroine Black Cat. Cockrum was a prolific and inventive costume designer who updated the uniforms of the Legion of Super-Heroes and the X-Men in the 1970s and early 1980s. Provided by Wikipedia