Harpoon
Fictional character
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Harpoon is a fictional character appearing in American comic books published by Marvel Comics. He is a member of the mutant assassin team known as Marauders, who are employed by Mister Sinister. Little is known about Harpoon other than that he is... Wikipedia
Creators: Chris Claremont, John Romita Jr., and Dan Green
First appearance: Uncanny X-Men #210 (October 1986)