A 32-year-old maintenance mechanic. Jim initially comes off as the "stupid lunk" of the group, but is soon revealed to be quite intelligent. Jim was once a member of the Mars Base forces, but deserted after failing to save a friend from the Inbit. Though he labeled himself a coward and often sees himself as a liability to Stick's team, the team is quick to object to this, noting Jim's courage and dependability during their repeated encounters with Inbit forces.

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