While I was pasting Innsmouth symbols onto my monster trophies, I noticed that the Deep One Hybrid's toughness is off-center, as though he was supposed to have two instead of one. Granted, all four of them are identical, but do you think they were supposed to have two? Currently, they have the same combat-side stats as a Byakhee.

I doubt it, 2 toughness is for pureblood deep ones.