Historically, King Zhou was an ancient Chinese ruler who lived during the 10th century B.C.E. and is widely considered to have been a brutal and erratic king. The book presents King Zhou as a computer-generated leader in the game Three-Body, where he rules over the first level of the game. Like the other game leaders that will follow him (namely Mozi, Pope Gregory and Qin Shi Huang), Zhou is violent, impatient, and obsessed with his own grandeur.