Yan Emperor
According to the "Records of the Grand Historian", Qin Shi Huang worshiped Chiyou as the God of War, and Liu Bang worshiped at Chiyou's shrine before his decisive battle against Xiang Yu. The mythical title God of War was given to Chiyou because the Yellow Emperor and Yan Emperor could not defeat Chiyou alone. Altogether, Chiyou won 9 major battles including 80 minor confrontations. On the 10th and final war, both emperors combined their forces and conquered Chiyou.