Kenny is an emotionally distant, bad-tempered drunkard who definitely doesn't effuse warmth when it comes to his daughter and her son. While his initial reaction to finding out about his daughter's death should cross him off of this list, his impetuous action of shooting Dylan to make him pay for it doesn't scream a stable state of mind nor strong decision-making skills, for that matter. Lest not forget, he's the only one among the primary suspects to have a licensed gun to his name.