Sampo is a 23-year-old tall man with short purple hair, green eyes, and a sly, selfish personality. He works as a mercenary in the Underworld, taking on various jobs for the right price. He has a history of being arrested by Lieutenant Gepard, a blonde officer, but sometimes manages to charm his way out. Sampo dreams of going to Penacony, the richest city, and his past as an orphan fuels his self-importance.