Susanoo

スサノオ, Haya Susano Wo No Mikoto,Grampsy

Susanoo is a former Heretic God. He seems rather mellow, as he even allows Ena to get away with calling him Grampsy, and asking Godou to call him Old Man. Still will not allow those who are not at least Campione, if not gods, to be in his presence. (Source: Campione! Wiki)