Epsilon is actually less surprised about the cause of the breakdown than he is by the fact that Faust's mouth, at least, appears completely human beneath the paper bag.

He doesn't let it show, of course; that would have been extremely inappropriate. It isn't his business what Faust is or isn't under the bag, or why he wears it.

"Consider us even for the startle I gave you earlier," he says instead, offering a small smile. He relaxes his vine again, reaching towards Faust with it once more--though he is careful to do so slowly to avoid any more alarm, and it stops a couple feet away from the man, just in case.