William Beardsley is the eldest child in the Beardsley children. He is portrayed by Sean Faris.
William, usually takes after his father and is the main role model of the children. William knows the drill of how to look after his siblings. William is 18-years-old and he got a phone number from a girl two houses down from their previous home. William was the mastermind of the breaking-up plan. William is organized and knows how to let little kids have fun. William also applied for Class President and then he won the election with the help of his brothers and sisters, and the posters Dylan did for him.