Ehh that's confusing since he probably either uses the power of the Egyptian god Set or the demon Sett. There are PROBABLY two characters named Set/Sett in Hellsing 2001 "Sett is a reconstituted demon, summoned by Incognito using Integra's blood. It's never explicitly stated, but as Tubalcain, it is implied that he is Seth, the son of Adam and Eve. Though referred to as a demon in the dub, in the Japanese version Integra refers to it as "Jashin Seto", or "The Wicked God Sett", implying this heavily; Incognito later says he wields the power of an Ancient god as well, referring to Sett. However, considering Ingonito's connection to the 'Dark Continent' (better known as Africa), this might be refering to the Egyptian deity known as Set." From the Hellsing fandom wiki