User blog comment:GotMilk5101520/Silver Backstory & Tartarus and the Tower of Heaven/@comment-24066070-20140603140216/@comment-24066070-20140605064030

Deliora was frozen after fighting Ur, so he wasn't a raging beast at that time. He also didn't rampage after being unfrozen, since he died right away.

I know it's a complicated and farfetched theory, not even sure if it can be seen as a theory.

I've just been trying to think of alternatives for the "Silver is Gray's father" lately, as I kinda dislike plot developments which are far too obvious and which can be seen coming from miles away, like the whole Tobi is Obito thing.