Helmond, who famously portrayed mother Mona Robinson in ABC's Who's The Boss? for eight years and Jessica Tate on Soap, died on Feb. 23 of complications from Alzheimer's disease at her home in Los Angeles, her talent agency, APA, announced.
Making her television debut in 1962, the Texas native starred in various plays, shows and films, including Family Plot, Brazil and the Cars movies (in which she voiced Lizzie). But her most memorable role would be that of the feisty Mona in Who's The Boss? (1984-1992), for which she earned two supporting actress Emmy nominations.