Barney Cashman is a fictional character from the play "Last of the Red Hot Lovers," written by Neil Simon. He is a middle-aged, married man who feels unfulfilled in his life and seeks to have an affair. Barney's character embodies the struggles of balancing personal desires with societal expectations. Throughout the play, Barney attempts to navigate his romantic pursuits while dealing with the complexities of his relationships. His humorous yet poignant experiences highlight themes of love, loneliness, and the challenges of midlife. The character serves as a reflection of the human condition and the quest for happiness.