- The main protagonist of the show, Lucy is portrayed as a quirky, impulsive, and often mischievous character. She is frequently involved in humorous situations as a result of her well-meaning but often misguided attempts to outsmart her husband or achieve her goals.
- Lucy is portrayed as a traditional housewife, albeit with a modern, independent streak, who takes pride in her role and manages the household.
- She often involves herself in schemes to further her career in show business, leading to comical conflicts with her husband.
Ricky Ricardo:
- Lucy's husband, Ricky, is a Cuban musician and bandleader. He is depicted as a talented and passionate performer who leads a successful nightclub act with his band.
- Ricky is portrayed as the more rational and level-headed of the couple. He often serves as the voice of reason, trying to temper Lucy's impulsive nature.
- Despite their differences, Ricky deeply loves Lucy and often goes along with her crazy ideas, even if they result in humorous consequences.
Fred Mertz:
- Lucy and Ricky's landlord and friend, Fred, is a former vaudeville performer who now runs a cigar store. He and his wife Ethel live in the same apartment building as the Ricardos.
- Fred is portrayed as a supportive and loyal friend to Ricky, often providing advice and assistance when needed.
- Together with Ethel, Fred frequently serves as a comedic foil to Lucy's antics.
Ethel Mertz:
- Fred's wife, Ethel, is a housewife known for her sharp wit and a no-nonsense attitude. She is often the voice of reason among the group and provides a grounded perspective.
- Ethel is a close confidante of Lucy, often offering her support and advice in matters of friendship, family, and career.
- Alongside Fred, Ethel engages in humorous banter and interactions with Lucy and Ricky, adding to the comedic dynamics of the show.