Kaito is the vocaloid of Vocaloid 1 series . As a mascot character, he is the older brother figure for the entire Vocaloid group, frequently called “Oni-san”. He wears a white coat and a blue muffler. He is very popular among the female users of NicoNico Douga and sings a lot of BL themed songs. Although rougher sounding, Kaito and his sibling Meiko are able to incorporate much broader voice range than Miku and Rin/Len.