Guan Yu (關羽) was a Chinese general serving under the warlord Liu Bei in the 3rd century AD. He features as a major character in the novel Romance of the Three Kingdoms. He has since been deified under the names Guāndì (關帝), Guān Gōng (關公), and Guānshèng Dìjūn (關聖帝君); the latter name is the name used in the Japanese versions of installments in the Megami Tensei franchise.