Arthur "The Fonz" Fonzarelli is a fictional character from the television show Happy Days, which aired from 1974 to 1984. Portrayed by actor Henry Winkler, The Fonz is known for his cool demeanor, leather jacket, and iconic catchphrase, "Ayy!" He is a greaser and a mechanic, often serving as a mentor to the show's main characters. The Fonz became a cultural icon, representing the rebellious spirit of the 1950s and 1960s. His character is often associated with themes of friendship, loyalty, and the importance of being true to oneself. The Fonz's popularity helped solidify Happy Days as a significant part of American television history.