Void Ark: Confirmed to be a relic from the War of Magi?

[Fenral]

I wonder if Ferdiad will play a role in the next installment? After reading abit of lore regarding Scatach I know that she has a fortress of shadow (that tower?) and she's involved with Cu Calain and Ferdiad

Final Fantasy has typically depicted Cu Chulainn as seen in the particular episode in which he was turned into a horrifying, shapeless monster. It's an incident that has pretty much nothing to do with the actual legends surrounding him. Cait Sith is an unrelated figure, but also Irish in origin. Since no actual plot seems to be taken from Irish Mythology, I think it's safe to write it off as clever theme-naming at this point. Echidna, however, is Greek, and also just happens to be the one boss from FFIII's World of Darkness that didn't make it into the CT series.

Digging into the Irish mythology some more, Cu Chulainn and Ferdiad were foster brothers trained by the warrior woman Scathach, each with their own unique strengths, sort of like the hypothetical invincible spear and unbreakable shield. Stuff happens, they are of course forced into a duel to the death from which neither can back down from, and it looks like Cu Chulainn defeated Ferdiad by thrusting his spear Gae Bolg into Ferdiad's... Riiiiiiiight. I defy anyone to convince me that that's not a metaphor. (There's a reason people call it the "Gay Bulge.")

[vientown]

snip~

It's good that you're raising the significance of these names in the Ulster Cycle, but reading too far into them for the game in general is a bit problematic. Cait Sith is actually much more heavily attributed to Scottish mythology (it does appear in Welsh and Irish mythology too) - in fact referenced within series by the accent given in the compilation of FF7 etc. This may have confused you as Scathach is a Scottish woman within Irish mythology, but this isn't the case for Cait Sith (or perhaps you were confused by bean si?). Regardless, you can look at the naming conventions in general as Celtic if you must simplify them into a mythology that crosses nationalities (contrary to American perspective, Scotland and Ireland are not interchangeable, despite shared culture etc :P). You may want to expand your research in that way, rather than further relying on the Ulster Cycle. What would you do if Ceridwen appeared somewhere in there as a boss name?

In addition to Echidna from Greek, Diabolos is from Latin. Maybe we should start looking at these names for their in-franchise resonance? Cait Sith in FFXI for example, or as you say, Cu Chulainn separated almost entirely from his legend.

[Fenral]

It's good that you're raising the significance of these names in the Ulster Cycle

I was just pointing out the commonality of the names, and I highly doubt there's any more significance than that, since there very rarely is in Eastern RPGs. Also, the entire second paragraph was just a Gae joke.