After a quick second from Ty speaking, he immediately started to change. his muscles grew and his height increased to six and a half feet. Fur rapidly starts growing all over his body while his face contorts and morphs of that into a wolf's. Dustin screams in sheer terror and panics, taking a quick chance and makes a break for it. It was all in vain, as Ty catches Dustin with a very large hand that was halfway done morphing fingers into giant claws. He tosses his foster brother hard against the window, not breaking it but leaving it badly shattered.
"M-mo-MOOOOMMM!!" Dustin screams out in distress, tears rolling down his eyes. Footsteps were rapidly heard coming up the stairs, barely being heard over Ty's low laughter and snarling. His transformation was nearly complete now, a tail casually growing from above his rear while filling in it's bareness with fur. Two figures appeared from behind him, making Ty turn around to reveal his new complete form.
"OH MY GOD!" June shrieks in terror, with Mark stepping in front of her as a form of protection. The black werewolf snarls at them, the moonlight shining in through the shattered window to fuel his presence even more. Ty towered over his foster parents, his saliva drooling onto the floor in front of them. Mark raises his baseball bat and took a hard swing on Ty, barely phasing him as the wooden weapon splinters into pieces. This action really angered the beast, and in a quick motion his jaws clamped hard around Mark's neck. Ty growls and rips a huge chunk of flesh from his throat, causing blood to splatter all over his fur.
"DAAAAD!" Dustin cries out in horror, watching his father fall to the ground to have a pool of his own blood soak underneath him. June screams at the top of her lungs as her husband laid dead, being caught off-guard as Ty grabs her around the waist and tosses her onto the bed. "D-DON'T HURT HER PLEASE!!"
"AAWWWWWOOOOOOOOOOOOOOOO" Ty howls at extreme decibels, breaking the window behind Dustin and almost causing him to fall out of the room. The two humans were his for the taking, having unlimited power to finally get the revenge he wanted on them. His cock throbs to become fully erect, being at least 10 inches long and more human like than wolf. He snarls and makes his choice.