Mark wears a deep green pullover sweater, with a white dress shirt and a black tie underneath, and black slacks. His hair is dark brown and slightly wavy, with a parting in the bangs. He appears to be the older of the two siblings and is the more outgoing one, curious about what life was like outside their home and eager to explore the public school, wanting to see what other boys were like. Though he is incredibly intelligent, he was also naive in a few ways. Hes 10 years old.