Chachi Arcola is a fictional character from the popular television series Happy Days, which aired from 1974 to 1984. Portrayed by actor Scott Baio, Chachi is introduced as the cousin of Joanie Cunningham and is known for his charming personality and musical talent. He often finds himself in romantic situations, particularly with Joanie, leading to a significant storyline throughout the series. In addition to his role in Happy Days, Chachi Arcola starred in the spin-off series Joanie Loves Chachi, which focused on his relationship with Joanie as they pursue their dreams in the music industry. The character is remembered for his youthful energy and the lighthearted moments he brought to the show.