Charlie Duncan is a fictional character from the Disney Channel series Good Luck Charlie. He is portrayed as the eldest child in the Duncan family, known for his caring and responsible nature. Charlie often takes on a leadership role among his siblings, helping to navigate the challenges of family life. The show revolves around the daily adventures of the Duncan family as they adjust to the arrival of their youngest member, Charlie Duncan. The series highlights themes of family, friendship, and growing up, making it relatable to both children and parents alike.