I'm SO effing TIRED of seeing people bringing up Sephiroth and Kefka everywhere..! Cool villains sure.. but they have absolutely nothing to do with FFXIV..
I cringe everytime on youtube I see "omggg this totally sounds liek kefka!!" in the comments of a FFXIV track..

Sephiroth belongs to FFVII and Kefka to FFVI.. none of them are FFXIV.. that's the bottom line.. Final Fantasy titles are best known for the fact that every story has nothing to do with the others..