To be a mercenary in the Multiverse is to sign yourself up for all manner of grisly deaths, torture and pursuit at the hands of the various factions that life as a mercenary will ultimately put you at odds with. Marshall has adapted to his situation and has worked many jobs for various employers across the galaxy, but the amount of other muscle-for-hire has made him less than a household name and he only works to pay his rent at the end of the day.
Marshall has had surgery on his larynx and lungs making him able to breath even the most toxic fumes and biological bombs, and he carries his signature force-field-covered knife and the keys to his hover-bike.