Before the Bloody Field Trip Case five years ago, Ron's hair was short and neatly slicked back. According to Totomaru Isshiki, he looked quite dapper then.The incident also left Ron with a large scar on his neck that looks like a "96."

Ron often wears his regular loungewear which consists of a white shirt, black cardigan, gray sweatpants, and black slippers. He also owns a lot of clothing that depicts platypuses. Ron is a thin, slender man with disheveled black hair and sky-blue eyes which are usually hidden behind his bangs. However, when he deduces something, Ron pushes his hair to the side and reveals his eyes. Whenever Ron pressures a murderer into killing themselves, a strange glaze lays itself over his eyes. Totomaru Isshiki Totomaru is Ron's investigative partner or, as Ron jokingly calls him, "puppet" as he "controls" him from the shadows. Ron tells him the solution to cases, and Totomaru presents them as his own deductions as Ron is banned from doing any detective work himself.