Guo Sheng is from Jialing. When he was young, he learnt martial arts from a military officer in his hometown and has become an expert in using the ji after many years of training. He is nicknamed "Comparable to Rengui" because his combat skills are comparable to those of Xue Rengui. Guo Sheng is one of the leaders of the Liangshan cavalry and one of the Central Camp Defendant Generals. He and Lü Fang serve as Song Jiang's personal bodyguards during the battles against Liangshan's enemies. Finally, he is killed by boulders rolled down by the enemy during the campaign against the rebel leader Fang La.