Ranpo is a young man with a fair complexion and short, messy black hair. His eyes, which are closed most of the time, are brown.[note 1]

His attire consists of a brown inverness cape that he wears over his shoulders and whose color matches both his hat and his pants. Under that, he wears a dark grey blazer and a white button-up with a light and dark blue striped tie. Under his three-quarter length pants, he wears long white socks that cover the visible part of his legs, and simple black shoes.