Greg Focker is a fictional character from the comedy film series, starting with "Meet the Parents" (2000). He is portrayed by actor Ben Stiller and is depicted as a male nurse who struggles to impress his future father-in-law, Jack Byrnes, played by Robert De Niro. The character is known for his awkwardness and comedic misadventures. Throughout the series, Greg navigates various challenges in his relationship with Pam Byrnes, played by Teri Polo, and his attempts to gain Jack's approval. The films explore themes of family dynamics, love, and the humorous difficulties of meeting parental expectations.