The dark hides all sins... and crimes.
No one knows much of anything about the Phantom. As with his namesake, he moves like the undead. Silently, Spookily. He appeared in the prison not long after the Abbott and was an enigma from the very beginning. We weren’t ever really sure who’s side he’s on. We still aren’t.
No one knows his true origins. Not even his real country. He speaks dozens of languages as if he could have been born to any of them. If asked, all he will admit to is being the son of the devil and a whore.