((Eh. I'm going to have him be a Vampyre, but he's going to be a bit different. Plot twists, you know. I thought about each plot, and I favored the Vampyre outcome, thus...))
Evan stood there in the doorway, glancing over Aereo's trembling form to his mutilated brother. He simply stood there, one hand gripping the door frame with white knuckles. His eyes were expressionless, and as his hand slipped from the frame, the door swung open a bit more. He took one step forward, blood splashing around his shoes as he approached his body. He bent down, blood soaking his white lab coat and staining it a permanent red. He touched Willy's cold, dead cheek and sighed. He took out a small recorder from his pocket, pressing the button and talking into it.
"Death confirmed. Willy Briar." He checked his watch, "By the time between Aereo's calls and finding the body, I'd estimate the time of death to be around four-thirty-seven pm." He said simply, standing back up. He looked back at Aereo, noting the blood matting in Aereo's form, "Cause of death; plausibly the ripping out of the throat. The culprit behind this is most likely Aereo, a wolf-hyena-human hybrid with promethium blood."