Walter Younger is the protagonist of "A Raisin in the Sun" by Lorraine Hansberry. He is a complex character who is struggling to find his place in the world. Walter is a dreamer who is frustrated with his life and wants to achieve something more. He is passionate about his dreams but is also impulsive and makes poor decisions. Walter is a man who is struggling to provide for his family and find his identity in a society that is hostile to him. He is a symbol of the struggles faced by African Americans in the mid-20th century and the challenges they faced in achieving the American Dream.