User blog comment:IamJakuhoRaikoben/Chapter 366: 1000 Souls, Review./@comment-5598380-20140109213300/@comment-4449950-20140109214345

I'm thinking father. He looks to be a little older than Gildarts and Gildarts would be 52 if it weren't for Tenrou. take away Gray's supposed-to-be 25 years and you get a 25ish year old :) Father ;D