#7: Conrad Bain as Arthur Harmon
Arthur Harmon, the conservative neighbor and close friend, provided a sharp ideological contrast to Maude’s liberal fire. Conrad Bain’s dry humor and calm delivery made Arthur a steady, endearing presence, offering a voice of reason — or exasperation — during the show’s most heated political and social debates.

Bain’s performance gave Maude balance, allowing the series to explore both sides of cultural issues with humor and intelligence. His chemistry with Bea Arthur and Rue McClanahan created some of the show’s most engaging, witty exchanges between neighbors who disagreed yet genuinely cared for one another.