Sethius was a ancient vampire according to legend he was the first vampire and self-proclaimed chosen one of vampire-kind and Vlad's greatest rival and foe. he`s plan was to turned every breather in the world into vampires and begin a vampire civil war but the ancient vampires believe he was insane and imprisoned him in the praedictum but failed to kill him. The praedictum Impaver eventually fell into Bertrand's hands, and, believing that once opened the book would reveal the destiny of the vampires, he travelled to Garside Grange to train Vlad, the true Chosen One, in the use of his powers so he can open the book. He eventually does so, but finds the pages blank: Erin later fills them with her blood - the blood of a slayer - and Sethius was freed. He recruits Ingrid and Bertrand as lieutenants and sets about planning to conquer the world: and again desides to try again that insane plan to turned every breather in the world into vampires and begin a vampire civil war Vlad tries to defeat him but Sethius appears to be even more powerful than him, or at least more skilful in the use of his abilities. Eventually Vlad convinces Ingrid and Bertrand to betray Sethius and they, together with the Count and slayers Jonno and Mina Van Helsing, attack Sethius, distracting him until Renfield and Wolfie are able to destroy him with a sun catcher machine.
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