P.J. Duncan is a fictional character from the Disney Channel series Good Luck Charlie. He is portrayed as the middle child in the Duncan family, known for his laid-back personality and humorous antics. P.J. often finds himself in amusing situations, showcasing his carefree attitude and love for fun. In the show, P.J. is played by actor Jason Dolley. He is characterized by his close relationship with his siblings, particularly Teddy Duncan and Gabe Duncan. P.J. frequently navigates the challenges of teenage life while providing comic relief to the family dynamics depicted in the series.