The beam fired from the gun and instantly the arm began to shake, swelling as muscle fibers ballooned beneath the skin. Bulging into thick slabs of meat. The arm grew so large it's forearm an bicep collided at the elbow, locking it in place. It's size lifting its small feminine legs into the air kicking for ground. At the end, its fingers could only flex in place, oddly enough, if a hand had body language it looked like it enjoyed just flexing itself.
"Great! Ok, I hope this works now." scare said, pointing the gun at her fat leg.
With a light trigger pill a thin beam shot into her thigh, causing little ripples in the fat on impact. The leg however, began to shrink, losing fat!
"YES! I knew it would work!"
"I see," said the mouth, in lightened by the experiment. "The fat and muscle guns cancel each other out. Very clever!"
"Thank you!" Scar replied, holding her lower arms out and pinching her fingers as though she was doing a curtsy.
"So, is that your plan? Gather more guns, make more monsters?" The 'mouth' pointed to herself. "There are tons more guns out side from all those fat or muscled meat bags out there from before I showed up, or do you have another clever plan?"
Scar weighed her options, using her one free hand to scratch her chin. "Weeeeellllllll..."