The gang from Happy Days — Richie, Ralph, Potsie, and Fonzie — brought years of laughter to American living rooms during the 1970s and '80s. They brought back a resurgence of nostalgia for the rock 'n' roll Fifties for viewers young and old alike.

When most people think of Happy Days they think of the Fonz, but the classic sitcom wouldn't be the same without good friends like Ralph and Potsie. Their hilarious antics, not to mention musical abilities, made the show that much better.

Don Most, who played Ralph Malph, revealed in a recent interview that not only was everyone great friends on set but that many cast members still keep in touch all these years later.

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"We became incredibly close and experienced so many things together as a family off-camera, as well as while filming," he said. Most still talk with Henry Winkler, Ron Howard, and Mrs. C herself, Marion Ross. But he's closest with Potsie actor Anson Williams, saying, "We're best friends and probably tighter now than we ever were."

Most also fondly remembered costar Erin Moran, who passed away in 2017:

"She had this incredible light in her, even at such a young age. She had this vibrancy that illuminated within her and such sweetness. And she was such talent on set. Somehow she combined all of that together."

The Happy Days set was a place that encouraged collaboration, according to Most.

"We had all of these great sessions where the writers, actors, producers, and director would have a run-through and creative meetings about it." He recalled series creator Garry Marshall's "comic genius" when something wasn't working quite right. "If there was a problem with a scene, Garry would have at least 10 different solutions for them."

The real friendship between the actors comes across in the show. It's a bond that has stood the test of time and continues to grow stronger decades later. It’s fitting for a feel-good show like Happy Days. "It was important to Garry for us to offer great characters in really fun situations where he could wrap it all up nicely with a family-oriented message," Most said. "I appreciate that now more than ever."