I never could guess where 'NFITC1' came from. It's not a set of initials / birth year (sl1982), nor an obvious acronym.
NFITC = Nameless Face In The Crowd.
I remember because when we all changed our names to things Cloud-related, he announced that he was changing his name to Nameless Face In The Cloud... and therefore just didn't change his name
Don't know where the "1" comes from.