Satomi sports a spiked crewcut which meets in a widow's peak just above his thin, arched eyebrows; perched on his convex nose are what appear to be glasses akin to swimming goggles. Oftentimes his laughter is accompanied by an impressive, unhinged jaw. When not in a chuckle, his upper lip sometimes forms a cat-like purr.
His uniform consists of a black long-sleeved vest cuffed at the forearm with puffy, olive-green sleeves at the bicep, and white trim. In addition to a wide collar, the zipper pull stops below the chest emblem, at the breast pockets. On his left carries a holster for a handgun.