Mark stands at a plenary height above 6 feet, and is a gaunt, angular fellow with glass-visored eyes tucked deep beneath the brows, the dim blue barely discernible. His expression is further furrowed over by frequent, scrutinizing frowns and squints, and the usually corporate attire in which he is usually met is but a poor concealment for the fact that he is a profoundly unhappy man. When he does smile, it is mostly an awkward action carried out more because of a pressing sense of propriety rather than sincere joy.