Now that I was half devil, I had no desire to play by the rules of human society. I didn't have to work at a dead-end job, I could take whatever I wanted, when I wanted it! Runt must have noticed the lust for power in my eyes and stated, "You've got big ambitions, haven't you? I can see it all over your face, you want it all. You want to eat, sleep, conquer, repeat." The idea sounded so fascinating, I just couldn't disagree. "Yeah! Exactly that! What do you have in mind?" Runt paced around me, checking out every feature of my naked body. "In that case... I can make you a greater demon. These guys are not only big on size and physical strength, but they also have a magic skillset based on domination and control. Mine's based on chaos and change, of course." It sounded too good to be true.
Of course, I had a few more questions. "This form isn't too big and bulky, is it? I do still want to move around easily." Runt patted me on the ass in a friendly gesture. "Don't fret, mate. You'll start out the size of an average bodybuilder, but you can always pump yourself up if you need to." That answer was satisfyling enough. I stood there with my hands at my sides, ready for my "treatment". "Well well, you don't pussyfoot around, do you? I like that", said Runt as he got to work.
His agile hands started on my feet, stretching them 5 sizes bigger and pinching out a sharp black claw for each toe. He kept going upward, molding my legs into toned, muscular running machines, and squeezing the fat out of my ass to make it flat and solid. When he got ahold of my penis, he was almost salivating with anticipation. With extreme pleasure, he yanked it to an impressive ten inches -- flaccid at that, and lowering my balls to match it. He moved on to my chest, using all his artistic ability he sculpted my excess fat into a six-pack of steel. At this point, I was so much taller that he had to scramble to my shoulders to continue. I allowed him to handle my arms, and he gladly pumped up each muscle until I was twice as powerful as before. He even gave me black claws on my hands to match the ones on my toes. Finally, he went to work on my face, reaching into my mouth and molding my teeth sharp, pushing in my nose and pulling out my horns extra-long. Of course, I was a little startled when he ripped out all my hair to complete the look!
With his masterpiece completed, Runt jumped off my back to admire his work. "Now that is a work of art right there! You might be the best subject I've ever dealt with!" he said, squaring his hands like a photographer. "But that's enough artsy talk. I want to see it in motion!"