Kurotane Piko

Kurotane Piko is a popular derivative of the Vocaloid, Utatane Piko. He was introduced on Halloween of 2010. He is also sometimes referred to as "Dark Piko" or "Kuro". He is described as the manifestation of the "failure" of Utatane Piko. His name roughly translating to "sound of black Piko." Usually seen as serious yet tsundere. He tends to be violent around Utatane and his other ememies. The proposed fanon relationship appears to be popularized by pairing him with Kowaretane Zen And depending on the intention it is either romantically or brotherly.