Richard Sherman, originally from Philadelphia, is an explorer who came to Mars. After his arrival in the ill-fated first capsule, Sherman, together with Dr. David Yellin and Major Greg Duprey went out to explore the mines. It turned bad when he and Duprey got stuck in the mines after a cave-in while searching for iron ore for Andrew Carnegie. Sherman decided to leave the group when Chsheket was finally transferred into her metal body, saying that she was now a much better guide he could be. He instead chose to stick around and wait for the new space cannon to be finished.