There is a mystery shadow hanging out with Ralph. Who is this shadow character?

Are they part of the band? 

Are they a friend of the band? 

Are they looking to take over the world? 

Why does Dan look like someone surprised him with a butt squeeze? 

What is going on up on the ceiling that has Ryan so engaged? 

Does Adam know the shadow thing is sneaking up to attack? 

So many more questions than we have answers to. Stay tuned as we uncover some of these great mysteries.