Ethel Mertz

Ethel Mertz is Lucy Ricardo's upstairs neighbor, landlady, and partner-in-crime, married to the tightfisted Fred. She's game for nearly any scheme Lucy cooks up, whether that means impersonating someone, sneaking into a show, or covering a lie, all while trading barbs with Fred about his stinginess and their marriage's small indignities.

Vance plays Ethel as the rare best friend who's funny in her own right rather than a straight man's echo—she matches Lucy's physical comedy beat for beat and volleys insults with Fred with real comic timing. The writing trusts her with equal mischief, and Vance's warmth keeps the friendship feeling genuine underneath all the scheming.