User blog comment:Galcion/Roger's Epithet/@comment-3119203-20110221233215

I dont think he became truly famous until after he conquered th grandline, even if he was well known before. epithets are usually related to personality or abilities, and we dont know enough about roger to tell either of these. Pirate King is his true epithet, since this is what everyone refers to him as, like everyne calls luffy straw hat