Marissa Wiegler is a fictional character from the popular television series The Americans. She is portrayed as a young girl who becomes involved in the complex world of espionage due to her parents' secret lives as undercover agents. Her character adds depth to the show's exploration of family dynamics and the impact of deception. In the series, Marissa's experiences reflect the challenges faced by children in high-stakes environments. Her interactions with her parents, who are played by Keri Russell and Matthew Rhys, highlight the tension between loyalty and the quest for truth. Marissa's storyline contributes to the overall themes of identity and morality in The Americans.