- "Driving a forklift, it's easy. You'll get the hang of it real quick."
- ―Mark about to coach Ryo on his first day of work as a forklift operator.
Mark speaks fluent Japanese. He is a warm, quiet person, with a strong philosophical character. As he and Ryo became closer, they developed a friendship, and began conspiring together, each for their own purposes, against the criminal elements in the harbor.
Mark has a brother about Ryo's age who might have been dumped into the bottom of the sea and killed by the Mad Angels. This was because he leaked some important information. Mark could tell that only one person was killed; either the man who heard the information or his brother.
- Mark's zodiac sign is Cancer and he has a O blood type.
- As seen in the What's Shenmue? VHS tape; Mark was originally going to be part of the sailor group. However, in the final version of Shenmue; Harry Thompson took his place and Mark was instead a forklift operator at the harbor.