Elliot Page, Tom Hopper, David Castañeda, Emmy Raver-Lampman, Robert Sheehan, Aidan Gallagher and Justin H. Min gathered at the Los Angeles premiere on Aug. 5 Courtesy of Netflix cast reunited for the premiere of the show’s fourth and final season, and for at least some cast members, the feeling was incredibly bittersweet.

At the premiere for the Netflix show's fourth and final season in Los Angeles, California on Aug. 5, , David Castañeda, Emmy Raver-Lampman and Aidan Gallagher reflected on their time working together. "It's definitely bittersweet," Raver-Lampman, 35, tells PEOPLE.

"I think it's been an amazing six-plus years for all of us, and we've really become a family in real life. I think that's the beautiful thing to walk away from this experience with, is that I have friends for life." Gallagher, 20, was 13 when he auditioned for the role of Number Five — and he's well aware how large a role the show has played in his life so far.

Related: Christos Kalohoridis/Netflix "It's been a long time and it's been a privilege to get to go through life through all of this," he says, adding, "It's been an absolute joy." Page, 37, for his part, acknowledged that he'll miss playing his character Viktor Hargreeves. "Viktor has really arrived at himself in so many ways, and he's so much more self-assured," says the actor.

In fourth season, the Hargreeves siblings have scattered following last season's showdown at the Hotel Oblivion, which led to a "complete reset" of their t.