The oldest Brennan sibling and co-owner of the family pub, Brennan’s. He feels a strong sense of responsibility for his family’s happiness but struggles to balance his personal and professional challenges.

Denny’s childhood best friend, co-owner of Brennan’s, and Sunday’s ex-fiancé. Close to the Brennans, he grapples with his feelings for Sunday upon her return to New York.

The third Brennan sibling and an artist who is especially close to Sunday. He works on rebuilding his life and managing the family pub alongside his brothers.

The Brennan family patriarch and a Northern Irish immigrant who values his children’s achievements and has a strong bond with his only daughter, Sunday.

Kale’s wife and the mother of his son, Luke. She feels the Brennans are pretentious and struggles with insecurity about her role in Kale’s life.

The late matriarch of the Brennan family who emphasized common-sense parenting influenced by her strict upbringing. Her relationship with each of her children shaped their family dynamics.

A former classmate of Denny’s who becomes an antagonist to the Brennans due to personal vendettas against the family.