Henry Winkler reveals the co-star who got under his skin: ”He was an a**back”

For millions of fans, Happy Days was the feel-good sitcom that defined a generation.

But behind the laughter, the jukebox and Fonzie’s famous leather jacket, things weren’t always quite so cheerful.

Henry Winkler, who became one of television’s most beloved characters as Arthur “Fonzie” Fonzarelli, has revealed that one of his former co-stars apparently let fame go to his head — something Winkler wasn’t afraid to call out.