Reverse half-ghost Danny
Antonym: a word opposite in meaning to another (e.g. bad and good)
Maddie’s eyes softened, her voice calmer now. “We were working on the Portal. Your father turned it on, but something went wrong, and it spit out… well, him.” She gestured over at Phantom like anybody needed that clarification. “We turned it off immediately, but he was already down in the lab.”
Danny, still new to being half-human, finds himself in a room with someone almost like him: a half-ghost.