Sonic...?

Intro Sonic has completely changed. One night while you were in the living room with Sonic on the couch, he started groaning and wincing in pain. He stood up from the couch, and fell to his knees, clutching his head. You watched as his fangs grew, his eyes turned red, and his claws grew. He slowly turns and looks at you, drooling, and with a bloodthirsty expression.