Happy Days aren’t just here to stay. The cast of the beloved sitcom seems to enjoy each other’s company so much, they’ve never faded away.

Series star Henry Winkler gathered together with his old pals, Anson Williams and Don Most, for a mini cast reunion that Williams shared to his Facebook on Sunday. “Three Amigos Together Again! Truly Happy Days!” he wrote in the caption of a picture of the former costars cheesing to high heaven while attending Fan Expo San Francisco at the Moscone Center.

Anson Williams, Henry Winkler, and Don Most in 2025.

Anson Williams/Facebook

It’s been 41 years since Happy Days completed its 11-season run on ABC, and a staggering 51 years since the classic sitcom first premiered.

The series, which chronicled the highs and (infrequent) lows of the denizens of a Milwaukee hamlet in the 1950s made stars of the lion’s share of its cast, Winkler, Williams, and Most included. Winkler, however, became Happy Days’ true breakout as the tough-talking, bike-riding, leather-clad Arthur “Fonzie” Fonzarelli.

Williams referring to himself, Most, and Winkler as the “Three Amigos” wasn’t just a bit of creative camaraderie. In a Happy Days context, the term actually refers to the nickname Fonzie, Potsie (Williams), and Ralph Malph (Most) gave themselves after their characters grew quite close in the series’ second season.

Though Winkler and Williams remained in the core cast of the series throughout its full run, Most left after season 7, having grown “concerned I was getting so associated with that role that it was going to be more and more difficult for me to break away,” as he explained in 2021. Most also suggested that “the material was not as good as it was in the earlier stage,” but he did return for the series’ final season in 1983.

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Anson Williams, Don Most, and Henry Winkler on ‘Happy Days’.

ABC Photo Archives/Disney General Entertainment Content via Getty

Various permutations of the Happy Days cast have reunited over the years, with Winkler almost always holding the center together.

Most recently, Winkler, Williams, Most, and their costar (like Most) of seven seasons, Ron Howard, shared a momentous reunion at a special fan event in April. “I’m just emotional here,” Winkler told the room, calling the reunion “the first time that we have appeared this way in 50 years.”

“The show evolved as, really, an ensemble,” Howard added. “We were a unit, we were a community, and also, I think for us, it was kind of like our coming-of-age story. We were just growing up through this process. It was a life experience that’s unlike anything else that I’ve ever known.”