The Oni Tribe are a race of Giants that have demonic features and are generally larger than normal giants. Although they are nearly extinct today, during the Void Century, they roamed the seas as warriors of mass destruction. For this reason they have earned the epithet, Ancient Giants.
Kaido and Yamato are hybrids of the oni clan with Kaido having 2/3 of oni blood and Yamato having 1/3 of oni blood. 1025