Tatsumi appears to be a 29 year old young man. He proves to be very powerful and athletic visible by his taller stature and lean muscle. He has short, messy (almost "furry") sky blue hair with equally messy but slightly darker eyebrows. When not hunting, Tatsumi's eyes are a striking shade of Yellow. Tatsumi is first seen dressed in typical clothing. As the series progresses, he displays a personal style consisting of several different jumpsuits (usually red).