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Caiman is a fictional mutant character in the Marvel Comics Universe whose first appearance was in Excalibur vol. 2 #3. Marvel Comics is an American comic book line published by Marvel Publishing, Inc. ... In comic books, first appearance refers to the date or issue of a characters first appearance. ... Chris Claremont (born November 30, 1950 in London, England, United Kingdom) is a comic book writer, best known for his 16-year (1976-1991) stint on Uncanny X-Men, during which the series became one of the comic book industrys most successful properties. ... In Marvel comic books, particularly those of the X-Men mythos, a mutant is a human being who is born with genetic modifications that allow for abilities not possessed by regular humans. ... Unus the Untouchable is a fictional character from the comic book X-Men and part of the Marvel Comics Universe. ... In Marvel comic books, particularly those of the X-Men mythos, a mutant is a human being who is born with genetic modifications that allow for abilities not possessed by regular humans. ... The Marvel Universe is the fictional shared setting where most of the comic stories published by Marvel Comics take place. ... Excalibur is a Marvel Comics superhero group, an offshoot of the X-Men, usually based in the United Kingdom. ...