In FFXIV, Cait Sith is a he, in XI Cait Sith was a she. I can see the confusion.

One was a living deus ex machina and the other is a particularly long-lived magical familiar, but yea I don't see the point in comparing. Cait Sith was a major character in a XI expansion (whose storyline was delayed and drawn out over the course of what felt like ninety years), here he's a major character in one quest line. It's trying to compare Nidhoggs--you shouldn't because while they have the same name and outward appearance, they're totally different things.