Marika Greenwald is the daughter of Nick Greenwald, the patient in the episode The Social Contract, and his wife Audrey Greenwald. She was portrayed by actress Darcy Rose Byrnes.

Marika was coloring while in her father's hospital room and the doctors noted that she wasn't really paying attention to them when they were talking. Audrey tried to explain that Marika had an auditory learning disability, but Nick, who was suffering from frontal lobe disinhibition, couldn't help blurting out that he just thought Marika was of below average intelligence. He tried to apologize, but Marika rushed out of the room without saying anything.

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