Al Delvecchio
Alfred "Big Al" Delvecchio is a character on the U.S. sitcom Happy Days. He was played by Al Molinaro. Molinaro joined the cast in Season 4 after Pat Morita, who played Arnold, left after the end of the third season. Subsequently, Molinaro also played Al's twin brother priest Father Anthony Delvecchio. Al said that he also had a brother who worked at the sanitation department.
Fictional character biography
Al Delvecchio was the drive-in owner and cook of Arnold's Diner from season 4 to season 9. He took over Arnold's after Arnold got married and moved in season 4. Al eventually married Chachi's mother, Louisa. He had a sighing catchphrase of "Yep-yep-yep...". Al and Louisa moved to Chicago with Joanie and Chachi and opened a restaurant in Chicago where Joanie and Chachi perform. When Joanie and Chachi move back to Milwaukee, Al and Louisa remain in Chicago.For much of the series, Al would talk about his former love, Rosa Coletti, and how she left him for a tie salesman. Al would meet Rosa again in the eighth-season episode, "If You Knew Rosa". She was played by Nancy Marvy.