Shocker (1989)

On the precipice of execution, facing retribution for unspeakable acts, Horace Pinker undergoes a horrifying metamorphosis, becoming a being of pure, malevolent energy. He transcends mortality, empowered by a dark force. Standing against this formidable entity is Jonathan Parker, a gifted athlete tethered to Pinker by a disturbing psychic link forged in the realm of nightmares. This connection may be the only way to stop the unstoppable, placing Jonathan as humanity's last hope against an electrifying evil. The battle will test the limits of courage and sanity.