Complex sentence: Hub underwent Terrigenesis he awakened to find he'd lost most of his body save his head, unable to communicate with the outside world he became a prisoner trapped within his agony as his power manifested in the form of energy generation.
Split into simpler sentences: Hub underwent Terrigenesis; he awakened to find he'd lost most of his body save his head. Unable to communicate with the outside world, he became a prisoner trapped within his agony as his power manifested in the form of energy generation.