Mark often engages in the trade of an SRM export known as "trickwines." These trickwines are often exchanged for firearms. They display a high level of devotion to the SRM and are often described as a "fanatic."

They seem to have served in some sort of war as they have a large number of scars on their body. They also seem to have a considerable amount of combat experience as they are proficient with firearms.

Their speech is difficult to understand due to a large amount of damage to their vocal cords, resulting in a coarse voice. They claim to have received it from a "gnarly fight with a xeno."