He is the death dealing enforcer of the feared Yamato Clan. When rival clans
of cyber crime lords seek hostile takeovers of the Yamato Clan, it is Overtkill
that is called upon to squelch them. His chief opponent is Manga Samurai Spawn.
It was Samurai Spawn that stopped Overtkill from stealing the jewel of Kuroshio.
Their hate for each other is searing.z