 Dracula seems to be able to hold influence over people with mental disorders, such as Renfield, who is never bitten but who worships Dracula, referring to him over the course of the novel as "Master" and "Lord".Dracula also afflicts Lucy with chronic sleepwalking, putting her into a trance-like state that allows them not only to submit to his will but also seek him and satisfy his need to feed.Dracula's powers and weaknesses vary greatly in the many adaptations.