"After almost 10 years of making Lego movies, they had this idea for this show and it just seemed so organic for me," he says. "I’ve never done this before. It was a very meta experience. ... A lot of times I felt like I was more a cheerleader.... I was like a fan who had been let in the room." Arnett adds: "One of the great things that was revealed to me, really quickly, was how good all of these builders are. You’d think, as the layman, they’d just be good at building Lego. But what you find is they all, as artists, have a very different approach. Some are more technical. Some are more purely artists. They all bring a different thing."