As Stoker wrote him, R. M. Renfield is 59 years old, of sanguine temperament  and😆 great physical strength.  His morbidly excitable  nature is interrupted by periods of gloom.  There😆 is no mention of where he has come from, how long he has been a patient at the sanitarium, or😆 what his occupation was.

The vampire, whose abilities include control over animals such as rats, bats😆 and spiders, comes to Renfield with an offer: if Renfield worships him, he promises to make him immortal by providing😆 an endless supply of insects and rats, as Renfield believes that blood is the source of life.