Sig Nakashima is a student at the Primp Magic School in the Puyo Puyo series. Known for his laid-back personality and unique heterochromatic eyes, Sig is a quiet and mysterious boy with a fascination for bugs. He is not very expressive and often speaks in a monotone, but is kind-hearted and helpful to his friends. Sig plays an important role as a recurring character, participating in many of the series' magical adventures and Puyo battles, often supporting the protagonist, Arle, and her friends.