User blog comment:Kaido King of the Beasts/Dreams Come True/@comment-1595565-20150120041358/@comment-24769684-20150120140631

I don't think Roger had any knowledge of this guy. My thought process when I wrote this was that there have probably been several pirates, especially the Yonko, who have been in the New World for a very long time. Why haven't they found the One Piece yet? And unless it takes Luffy and crew that long too...it sorta set my mind on it.