He is obsessed with Laszlo's cursed hat made out of witch skin. (guest seasons 1–2, 4) Jake McDorman as Jeff Suckler – A reincarnation of Nadja's former human lover, Gregor, a knight who has been killed by decapitation in each of his lives. Nadja eventually restores Jeff's memories of his previous lives so that he can be more like his former self, leading to him falling into insanity and being committed to a mental institution. It is later revealed to Nadja and Gregor that Laszlo had been causing each of his deaths through history, which he does again. (season 1; guest season 2) Veronika Slowikowska as Shanice – Jenna's college roommate who witnesses her transformation into a vampire.