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About : Jim is an expert geologist and archaeologist, having taken part in an excavation of a Tyrannosaurus in the past, and has a crocodile named Karen, initially believed to be a fake by Vellian Crowler and Bonaparte, who he carries around in a specially made backpack wherever he goes. Jim regards Karen as "family," and does not consider her a pet. He places great trust into Karen and often uses her as a judge of good character, which started his friendship with Judai Yuki. Jim wields a Duel Disk in t...