"Mutant? How dare you!"
Loose, leathery skin ripples over Talon, covering his entire body. Luke jerks his hand back in surprise. After the leather, with a painful grinding noise, nubs and plates of bone pierce his skin at various points of his body, before, finally, shiny scales ripple over his skin. Meanwhile, his right hand has withered, fingers fusing into one another and unfusing into clawed talons. With a hideous crunching noise, a plate of bone protrudes from his face, before extending down into his neck and chest, an ivory mask, with slits for eyes. His skin crawls as the musles grow and reattach, his very physiology changing. When its over, about 30 seconds after it began, Talon stands in front of Luke, equal his hight, clad in bony armor, talons cleanched with rage. Hissing, Deadly steps in to intervene.
"I don't care what they do on your world Luke, but on mine, insulting someone who can rearrange your organs is a very bad idea. Shapers are masters of anatomy and physiology - they do not alter things for the hell of it, but only to improve them. Talon was offering you a favour, and you insulted his work. If you were a Shaper, you'd be dead or disfigured for that. Anyone else could expect the same treatment, or at the very least have medical care refused from them, which is a death sentence in itself. I understand you deal with some messed up stuff, but back off. Now, Talon and I are going outside to have a look at these 'zerg'."
Deadly walks out quickly, practically dragging Talon behind him.
[Aren't Space Marines mutants by our definition anyway? Giants, extra organs etc.]