Authorities rated Rîmaru's modus operandi as ferocious and cruel, based on his propensity for cutting off clothes, biting off flesh, dragging his victims, and hacking away at them with his weapons, also raping them while they were unconscious. Rîmaru was judged to be aggressive, impulsive and sadistic. He showed signs of vampirism; for instance, he poked several holes into the flesh of Florica Marcu, who later related how he sucked blood out of them. Cannibalism was also present; he would bite women's vaginas, pubic areas and breasts, and the missing pieces of flesh were no longer found at the crime scenes. Additionally, he had necrophiliac tendencies, continuing his rapes after his victims had died and also beating and stabbing their corpses.