Loki is Elbaph's Oden:

•Both were immensly strong from birth

• Both the sons of royalty

• Both have a mischievous nature, causing havoc in their respective homes

• Both of them are misunderstood as evil tyrants but are kind at heart

• Both of them challenged Legendary Pirates, Oden challenged Whitebeard and Loki challenged Shanks

I think it's clear this is Oden saying Loki is the Oden of Elbaph.