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 Ichigo Kurosaki originally considered for Kon, derived from 'Kaizo Konpaku', but rejected the name for Kon as it was 'too cool'.