Jack Johnson

Jack Johnson is the younger of the Johnson twins, a curious, sweet-natured kid navigating the same identity questions as his siblings but with his own oddball logic and enthusiasm. He tags along, asks blunt questions, and treats the world with a kind of guileless confidence that gets him into scrapes he doesn't quite see coming.

Miles Brown plays Jack with a deadpan sincerity that makes his weirdest lines land as truth rather than jokes, which is funnier than pure punchline delivery could ever be. The writing lets him be genuinely childlike—confident, wrong, endearing—without making him precocious, so he stays believably a kid amid a very talky family.