Doop is a fictional character in the Marvel Universe who was created by writer Peter Milligan and artist Mike Allred. He made his debut in X-Force vol. 1 #116. He is a green, floating spheroid creature of unknown origins who spoke in a "language" all his own (represented in text by a special font). Although Doop has no obvious physical sexual characteristics he is almost always referred to as male.
Doop first appeared in X-Force vol. 1 #116, and appeared in every issue until the end of the series, and then appeared in all issues of X-Statix. Doop also appeared alongside Wolverine in a two-issue limited series.
Doop was said to be the product of a Cold War era U.S. military experiment, becoming instrumental in the fall of the Soviet Union.
He later served as the cameraman for the celebrity mutant superhero team X-Statix (formerly known as X-Force). He films a mission to North Africa which is later criticized by then-team leader Zeitgeist, he feels Doop should not be going for artistic shots. The next X-Force mission is to New York, where they are to rescue the boy band 'Boyz R Us' from hostage takers. While in the briefing room, U-Go Girl asks Doop not to keep shooting her rear from a low angle. Doop replies in his language only the characters know, while unexplainably mouthing some of his recording equipment.
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Official Site: Marvel comics
Links: Doop Wikipedia Article Doop Marvel Universe X-men Character Bios: Doop