The silver took the form of a fully-grown horse. Black hooves landed on the ground as the silver moved upwards showing slender, yet strong, white legs. A white tail swished behind him before turning into a long scaly tail in mid-swish. The white tail curled around his hooves before silvery-gold horns sprouted from the center of his spine. As the silver moved up his white body, the silver suddenly leapt into the air before fading away into silver hawk wings, which dropped down so the silver feathers were touching the ground. The silver worked its way upward still, making a coal-black mane that fell lightly over his neck before falling in between his white-black spotted ears. When the silver disappeared, there was a silvery-gold horn in the middle of his forehead with littler horns going down the center line of his mane. He opened his eyes which where a bright silver. Furling up his wings against his side, he glanced at Dean. He jumped off the bed before bending one leg to go down into a low bow. The silvery-gold horn on his forehead touched the ground, then he straighted up, looking Dean straight in the eye. “And I don't take orders very well,” he said, his tone was -- once again -- thick with sarcasm.

Jack's wolf is like no other. He, in wolf form, looks like he is wearing a suit. And a haunting one at that. Most of his fur is purple, but down his chest, it's layered to look like a vest, and the vest is green. The area around his eyes are black, while the path leading down to his muzzle is white. His scars are clearly visible, due to the fact that, while his muzzle is pure white, his mouth is not. It is colored a lipstick red, highlighting the horrible scarred tissue around his mouth. But, his back legs are a checker board patterned hues of green, purple, and a rusty color orange. 

References -  http://trylobyte.files.wordpress.com/2007/11/joker_kick.jpg

 http://cl*censored*icfun.ws/wp-content/uploads/2009/11/Joker-doing-a-kick-flip-over-Batman.-jpg.jpg

 http://media.photobucket.com/image/joker%20kick/froggystyle/jokerkick.gif