User blog comment:Saikou The Lewd King/Paradox list of AUs/@comment-26441687-20160522184341/@comment-26441687-20160523020347

I'm not sure I understand that logic. He wouldn't be dead, as his body is almost completely made up of holy particles by that point and is an empty vessel without a soul so I don't really see why the conventional ideas of being alive or dead would apply anymore.

As I mentioned, the only real indication that he's from a different dimension is the fact that the body of Heinrich as we know was assimilated into the Angel Halo so he shouldn't exist separately from it. But at the same token, the exact location of the Angelo Halo is conveniently unaccounted for in Paradox because Nero nabs it at the start of the game. The same Nero who just also happens to be nearby when Heinrich shows up. There's enough ambiguity there to leave the possiblity that he could still be from that universe.