Sett appears as a streak of white light, moving through London destroying everything in its path, and was absorbed into Incognito's body as part of his ritual. Sett also breaks the boundaries of Dark Magic, meaning he can increase the user's power to maximum allowing them to break their Dark Magic limits. Incognito used its power to fight Alucard in his Level 1 form, but it proved to be insufficient and Incognito was killed. Sett's fate after Incognito's death is unknown.
Although a god, he is still too weak to kill Alucard.