Lee Van Cleef was always “bad” and always good at being bad.
As for women, the mother of Raymond Shaw (Angela Lansbury) and Livia (Poison is Queen)from I CLAUDIUS take the cake.
Alida Valli in THE PARADINE CASE.
Katherine Hepburn in SUDDENLY LAST SUMMER.
Bette Davis in WHATEVER HAPPENED TO BABY JANE?.
Ruth Gordon in ROSEMARY'S BABY.
Judith Anderson in Medea.