Above: four Mutos Reploids (Hanumachine, Hyleg Ourobockle, Devilbat/Hellbat Schilt, and Fenri Lunaedge, from MMZ1-4 respectively) who aren't all that relevant to this chost beyond illustrating what Mutos Reploids are like. [Marge voice] I just think they're neat.
In the Mega Man Zero series, therianthropic "Mutos Reploids" replace the therianthropic Maverick reploids of the X series - who in turn replaced the humanoid Robot Masters of the Classic series - as the majority of the bosses you fight. In Japan, these three categories are, in reverse order, Numbers (as in robots with serial numbers, like the Wily Numbers), Irregular repliroids ("repliroid" being the JP version of "reploid"), and... well, here we come to the problem, because it's written in katakana as 「ミュートス・レプリロイド」, which could be localized as "Mutos Repliroid", but it's clearly a phonetic transcription of a foreign word, and "mutos" sure as hell ain't it.
Before I looked into it, I'd always assumed it was meant to be "Mythos Reploid", pronounced the way an English speaker would say it (i.e. /ˈmɪθoʊs/), which seems fairly obvious since they're pretty much all based on mythical beings... or just a normal-ass stag beetle in the case of Kuwagust Anchus, but his brother is Herculious Anchus (who's ostensibly inspired by Hercules), so he gets to stay.
But, today I learned that if you go back far enough in the history of Greek pronunciation, "mythos" - or should I say, mýthos/μύθος, or really μῦθος considering just how far back we have to go (1st century, according to Wiktionary) - is, in fact, pronounced /ˈmy.tʰos/, like how it's written in the JP version of Mega Man Zero. So it is technically still an erroneous localization, but they should be Mýthos (/ˈmy.tʰos/) Reploids, not Mythos (/ˈmɪθoʊs/) Reploids like I originally thought.
As an aside, this does also mean I now need to change how I say "Remastered Tracks Rockman Zero: Mythos" I guess??? I mean, the cover does say μύθος on it, and as just established that's how Inti Creates intended it to be read... 🤔