On the U.S. TV series "The Cosby Show", who played Theo's math teacher, the person known as "The Dragon Lady"?

On the U.S. TV series "The Cosby Show", the actress who played Theo's math teacher, the person known as "The Dragon Lady", was Sônia Braga. She guest-starred as Mrs. Westlake, aka "The Dragon Lady", the mercilessly strict and demanding math teacher who has made Theo's life miserable in school. Within Season 2, Episode 12 of "The Cosby Show", Mrs. Westlake (Braga) asks to meet Cliff (Bill Cosby). Theo (Malcolm-Jamal Warner) is worried that he is flunking Westlake's class.

Sônia Maria Campos Braga (aka Sônia Braga) was born in June 1950 in Maringá, Paraná, Brazil. She is a Brazilian-American actress and is known in the English-speaking world for her performances in "Kiss of the Spider Woman" (1985) and "Moon over Parador" (1988). She also starred in "Dona Flor" (1981) and "Her Two Husbands" (1976). In 1994 for her role in the TV film "The Burning Season", she was nominated for an Emmy Award and a third Golden Globe Award. Her other TV and film credits include "The Cosby Show" (1986), "Sex and the City" (2001), "American Family" (2002), "Alias" (2005), "Aquarius" (2016) and "Bacurau" (2019).

When the actress, Sônia Braga, became an award-winning star in movies and on television, she delighted critics, fans, and colleagues with her intense performances and old school acting ideas of glamour and humor. At the age of 70, Braga's active years in her professional career include 1967– present.