Casper was far more prepared this time for the electricity that would come from the whip. He tensed his muscles and clenched his teeth together just before the electricity coursed through his body and Keith's. He wouldn't want to bit his tongue with his sharp teeth. That might cause serious damage. His attacks were landing, but they just weren't doing enough damage. He just wasn't used to fighting an opponent who didn't go down after his regular attacks got through. He was holding one arm, his cat like eyes fixed on Keith, his claws twitching with the remainder of the electricity leaving his body. He spoke in a low, growling voice, his body half hunched over. The anger was gone from his voice and manner, replaced with a steely seriousness that was almost even more frightening, though the others might not have picked up on it because they didn't know him very well yet. This was how he got when he believed his opponent was an actual threat. It meant that he was no longer holding back. Though the others might not know it, all thought of this being a mock fight was now gone from his mind, his sense all completely focused on the destruction of the threat.
"I'll admit, you are more formidable than I originally took you for, North. I think it's time for me to stop playing. You'll regret making me get serious." There was no trace of humor in his voice, only the cold, calculating, intense stare of a beast deciding how to make the killing pounce on it's prey. He stared at North for a long moment, then suddenly he doubled over, as if in pain, though it actually didn't hurt, but was simply uncomfortable. His arms flew out straight, his clawed fingers curling viciously and his face hidden by his hair. Thick and coarse, but sleek and shiny black fur erupted all down his arms and legs, laying flat against his body, the hair on his head receding into the new fur as pointed ears sprang from his head. He fell to his knees, and suddenly two extra feet burst from his sides, as if spat out fully formed from his stomach, then quickly his hands, feet, and the new feet all melted into the small, but deadly clawed feet of a big cat. Out from his shoulders grew the two long tentacle like appendages, snaking their way out from his shoulder blades slowly, like snakes emerging from the grass. His body stretched to accommodate all of these new parts, his muscles rippling as they grew to the size of his powerful beast form. His face stretched at the same time, his teeth filling up his mouth even more and his nose and mouth becoming the muzzle of a big cat as his tail crept from behind him. Finally his form was complete, both the transformation and the finished product frightening to behold, though it took only about 10 seconds for the entire thing.
He circled Keith, like a beast stalking his prey, his feline eyes wary and focused entirely on his opponent, then suddenly he was three feet to the left of where he'd been, but closer to Keith, then 6 feet to the right of that and closer, his form running as he teleporting, his claws extending as suddenly he was to the side of Keith, slamming the man to the ground and raking him with his massive claws, the full weight of his powerful muscles and large body behind the attack.