Sanity Killer

You hide behind a chair in the room. Barney runs in, followed by a happy Elmo. It seems he turned back to his Sesame Street form. The Teletubbies see their new friend and direct their hypnotic song towards them, wanting them to play. Barney, however, is immune to this, and finds it an act of violence. His skin rips off, revealing a demonic interior that writhes with darkness. He leaps forward and chops them all in two with one swipe. This thing is... unstoppable. You're lucky you didn't try and kill him. Elmo looks around, then they both walk down the hallway. Barney pulls open a nearby closet and gets out a suit, putting it on to make himself look... normal again. If one can even CALL that normal. They walk down the hall, both completely forgetting you. Elmo seems a bit more sane now, should you distract Barney and get his attention to attempt a conversation? Or would kidnapping him and tying him up before he reverts back to Elmafia be a better plan? Then again, running down the hallway might also be a good idea, but could also attract a lot of unnecessary attention...