He is the rude, dangerous yet charismatic founder and boss of I.M.P (Immediate Murder Professionals), a demonic organization which offers Sinners a chance to take care of unfinished business by killing people who wronged them on Earth. He is the adoptive father of his receptionist Loona, the archenemy of Striker and the boyfriend of Stolas, the currently-exiled Prince of the Ars Goetia, with them initially having monthly in exchange for the former getting access to the latter's grimoire which would allow him access to the human realm; but later, Stolas took back his grimoire and gave Blitzo an Asmodean Crystal, which allowed him access to the living world. After Stolas' exile, they would begin properly dating after resolving several dramas