Modern Family is a popular television show that features a diverse cast of characters, each representing different family dynamics. The main families include the Pritchett family, led by patriarch Jay Pritchett, his younger wife Gloria, and her son Manny. Jay's daughter Claire and her husband Phil have three children: Haley, Alex, and Luke. Another key family is Mitchell and Cameron, Jay's son and his partner, who adopt a daughter named Lily. The show explores themes of love, parenting, and the complexities of modern relationships through humor and heartfelt moments.