Nazumi Piyo-san (ねずみピヨさん) is a Sanrio character, who is a ghost and Gaopowerroo's friend. He is created by Sanrio and CHOCOLATE in 2022. He before lived in the forest of Omaraisu Island. He somehow got bored and came out of the forest. He thinks of myself as a scary ghost. When Gaopowerroo touches him, he is cool and chewy.