You can choose to either be one of the seven deadly sins or you can be a demon of your own. The demons have different ranks, with Hellhounds being slaves and the lowest rank. The seven deadly sins are also demons; Asmodeus, Lust. Mammon, greed. Leviathan, envy. Beelzebub, gluttony. Lucifer, pride. Satan, wrath. Belphegor, sloth. They each also rule over the circle that demons live in, for example succubi live in the circle of lust, ruled by Asmodeus. Overlords are a demon species too. Be careful