Charles James Elleby was born in June of 2000 to parents Bill and Elizabeth Elleby. Elleby's father Bill played ball for the University of California and now runs a collegiate scouting business called Seattle Basketball Services. Elleby also has four siblings: Kobe, Billy, Chance and Victoria. The 6-foot-6 wing was a four-time letter winner at Cleveland High School in Seattle, where he averaged 23.5 points per game as a senior (2016-17) and was named First Team All-State by the Associated Press. Elleby ultimately chose to attend college at Washington State University from 2018 to 2020. While at WSU, he majored in sociology. Fans can follow the shooting guard on Twitter @EllebyCj.