Kai

Kai is a Bleach: Dark Souls original character. He borrowed the form of Rin Tsubokura and tried to take the other mod souls  but they turned into Hollows, Ichigo saved him and brought him to the world of the living, but Kon said he was all ready gone. 'Kai' is the name Kon said he wanted when Ichigo Kurosaki named him, as just as Kon is derived from 'Kaizo Konpaku'.