Board Thread:General Discussion/@comment-25301131-20150302004409/@comment-5808856-20150413133520

I am surprised that people didn't belive this theory. THere is one little detail, that is VERY obvious that means it had to be true. He is their great uncle. Therefor the brother of their grandma/grandpa. Just be being their Grunkle means he HAS to have a sibling.