fetishist - one who engages in fetishism (especially of a sexual nature)

masochist - someone who obtains pleasure from receiving punishment

nympho, nymphomaniac - a woman with abnormal sexual desires

child molester, paederast, pederast - a man who has sex (usually sodomy) with a boy as the passive partner

paedophile, pedophile - an adult who is sexually attracted to children

miscreant, reprobate - a person without moral scruples

sadist - someone who obtains pleasure from inflicting pain or others

sadomasochist - someone who enjoys both sadism and masochism

lech, lecher, letch, satyr - man with strong sexual desires

bugger, sodomist, sodomite, sod - someone who engages in anal copulation (especially a male who engages in anal copulation with another male)

abnormal - not normal; not typical or usual or regular or conforming to a norm; "abnormal powers of concentration"; "abnormal amounts of rain"; "abnormal circumstances"; "an abnormal interest in food"