Turns out, del Toro wasn’t even the only director to get in on the fun of messing with the new guy. “I’m friends with [del Toro],” Hader continued. “And I’m friends with Alfonso Cuarón, and Alfonso was texting me, “Guillermo says you don’t know how to direct.” [Laughs] They were just f***ing with me while I’m shooting with him. And I’m like, “Oh my god.” Guillermo was like, “I never said that. No, no, no. He’s being an a**hole.”
Of course, this isn’t the first time del Toro has popped up in a supporting role in a show he loves. He previously played “Pappy” McPoyle in “It’s Always Sunny in Philadelphia,” appearing in episodes in 2012 and 2016.
Bill Hader has certainly made a name for himself as a director worth paying attention to. Throughout “Barry,” he’s shown a keen eye for balancing action, tension, and comedy, pushing one over the other at the right time. Even if season 4 is less stressful than the previous season, it is much darker, but no less funny. Though he had very pragmatic reasons to take on directing duties for the entire final season of the show, Hader continues to prove he was more than up for the task, and if del Toro was comfortable enough teasing Hader, it is because he recognizes a fellow talent in the actor-turned-director. The final season of “Barry” will unfold over the next six weeks, and we can’t wait to see what Hader directs next.
Source : https://www.slashfilm.com/1259775/barry-s4-guillermo-del-toro-gave-bill-hader-playful-grief-on-set/