Talk:Race/@comment-90.192.79.80-20161029113347/@comment-206.34.122.70-20161208142422

Well, you have to pick one to translate into English.

異形�種 literally means 'unnatural race'. It's a play on words because it's both referring to how many Yggdrasil players saw them as 'ugly, grotesque' (so they were discriminated against) and some can shift between two forms (heteromorphy). It's also a reference to the fact that human players were 'morphing' into these grotesque montsers via the game.

It seems most were not heteromorphic (otherwise Ainz and his other guildmates should have had human forms) so it makes as much sense to use Grotesque as it does Heteromorphic.

Both are valid translations. Though if this word choice is a deal breaker for you, then it's probably best not to spend your money since the word Grotesque probably appears often.

As a side note, 亜人 also does mean subhuman. It's occasionally used as demihuman but in the Overlord series, there are specifically two different groups of non-human races: the humanoid races that are considered equal to humans (if not greater than) and the subhuman races such as lizardmen, goblins, etc. who are considered by nearly all civilized races to be barbarians, so it makes sense to use the term subhuman here.