Am I the only one who suspects he's not going to wear anything under the robe?

No, but you're the only one hoping for it...

Well, we already know who he is when he's wearing the costume, that's the only alternative we have for a "Big Reveal" I'm sorry that I like surprises.

Anyway, the cloak is made out of "metamaterials" precisely arranged in a series of concentric circles that confer specific electromagnetic properties.

It's spray painted toilet paper! It is, I made it myself.

Did you remember to wipe?

I have it. One of the actual robes used as a costume in the movie (part 2). And for the thick, veiny price of my penis in your ear, the robe can be yours.

Hillary is my budgie!

Yeah, but I had to use the robe, so if you still want it scream person?

I bet he/she does.