Arthur 'Fonzie' Fonzarelli, often simply known as 'Fonzie', is a beloved character from the classic television sitcom Happy Days. Portrayed by Henry Winkler, Fonzie is known for his cool demeanor, leather jacket, and signature thumbs-up gesture. He embodies the spirit of the 1950s and 60s, becoming a cultural icon of that era. Fonzie is not just a tough guy; he also has a heart of gold and often serves as a mentor to his friends, particularly Richie Cunningham. His catchphrases and laid-back attitude have left a lasting impact on pop culture, making him one of the most memorable characters in television history.