Skye Riley's duality drives Smile 2's plot, with mirrors reflecting and revealing her inner demons. Mirrors symbolize Skye's self-discovery journey, culminating in her succumbing to the smiling demon.
He also takes the devilishly stupid/smart smile demon device and blows it up to a much bigger scale. Instead of a therapist catching an infectious strain of PTSD from a patient, now, a mega-famous ...