Roberta Valderrama is a Peruvian actress and improv performer. She spent her childhood in Miami, Florida and Lima, Peru. She is best known for the role of Yolanda in 10 Items or Less, a partially improvised comedy series on TBS. Yolanda is "the power behind the produce counter and the mother of Carl's child." She first appeared on television in 2000, playing Stephanie, a candy striper who stalked Erik Palladino's character on a season 7 episode of ER. She holds a BFA from the Carnegie Mellon School of Drama and has also appeared in such stage productions as Three Sisters, ‘Tis a Pity She’s a Whore, The Merchant of Venice and Grownups on the Playground. In 2009, Valderrama starred in a Funny or Die video with Dennis Kenney titled "Happy Mother's Day!! !" In 2014, Valderrama appeared in The Purge: Anarchy as the villainous Lorraine.