Lyndsy Marie Fonseca is an American actress from Oakland, California.
Her father is of Portuguese descent. Her maternal grandfather had German and English ancestry, and her maternal grandmother was also of Portuguese descent. She was raised first in Alameda and then Moraga, California.
There, she was discovered by a manager and agent, then she immediately moved to Los Angeles for her first pilot season at the age of 13. "Colleen Carlton" became her breakthrough role on the CBS soap opera, The Young and the Restless (1973), on which she starred for three years.
After leaving Y&R to broaden her horizon, Lyndsy landed guest appearances on shows such as Boston Public (2000), CSI: Crime Scene Investigation (2000) and House M.D. (2004), just to name a few. Fonseca had a recurring role on the hit series, Desperate Housewives (2004), opposite Dana Delaney and Nathan Fillion. She has also had recurring arcs on the critically-acclaimed series, Big Love (2006), and the hit comedy, How I Met Your Mother (2005).
Fonseca has recently had success on the big screen, her film credits include: The Ward (2010), Hot Tub Time Machine (2010), Fort McCoy (2011) and the smash hit, Kick-Ass (2010), in which she starred opposite Aaron Taylor-Johnson.
Lyndsy starring as "Alex", in The CW's Nikita (2010). She can next be seen playing the role of Angie Martinelli, in the upcoming ABC TV show Marvel’s “Agent Carter”.