Sienar turns towards you and draws himself up to his full height. You hear a horrible sound of cracking bones- exposed bones. He then reaches back and draws back his hood, to reveal the remnants of what was once his face; his white hair is straggly and ghoulish; half of his face is pale and seems to droop slightly from the skull.
This is the good half; on the other half there is no flesh left. At the point where flesh and skull meets you can see where the flesh has been searned abd burned, precisely melted onto the skull itself by Sienar's laser treatments. On the skull side, though, the eye, llidless, still seems to function, the eyeball looking grossly exposed, it's piercing blueness still visible. Down at the mouth, the skull is mixed with parts of gum- but no mouth on that side, his gum and teeth fully exposed. He seems to have learned to speak mostly from the good half of his face.
He takes a full breath, and you hear a horrible rasp from internal body damage to the lungs and trachea.
"This room is now fully sealed. Nothing can get in or out, and no-one can listen in to anything we say. Which gives us a very intersting situation..."