User blog comment:B214/Question and Answers 6/@comment-106.68.232.55-20161011071720/@comment-9595671-20161011170350

You do have to remember "why" Midgardsormr sleeps. Recall how Shiva's purpose to destroyed the world? Well... he's the Norse version, in Norse mythology the creature Midgardsormr's based on is one of the major parts of Ragnarok.

That's why he stays asleep, because if he woke up... bad things happen. So being ranked second is likely very accurate, plus he seems to lik the world, so he's always sleeping so he doesn't have to do his purpose, possibly for never if he has anything to say about it.