Let's see. I'm just going to leave out all the inactives or this list will be just too long. I'm pretty damn creepy. Also not gonna post names in case people like their privacy.

I know the first and last name of:
(SPOILER)
rubah
Momiji
Yar
qwertysaur
Rye
I'm my own MILF
Jiro
Bunny
Quin
Marshall Banana
Aerith's Knight
Flying Mullet
Levian
scrumpleberry
Raistlin
Loony BoB
Tavrobel
Demon Dude
Fonzie
Freya
Breine
ShlupQuack
Shiny
NeoCracker
Kyle
Sagensyg
theundeadhero
Peegee
Shoeberto
~*~Celes~*~
Guardian XIII
The Summoner of Leviathan
Dignified Pauper
Baloki
Moon Rabbits
Iceglow
Miriel
UnbreakableWill
I Took the Red Pill
Cuchulainn
Mirage
Timekeeper
Rodarian
Roogle
Zeldy
fire_of_avalon
Garnie
Melissaur
I Don't Need A Name
Genius Lynx
enano
skt
Fujiko
Mo-Nercy
NorthernChaosGod

And only by first name:
(SPOILER)
Jessweeee♪
Psychotic
Goldenboko
Laddy
Vermachtnis
Kawaii Ryűkishi
Rocket Edge
Old Manus
Meat Puppet
Kentarou
oddler
leader of mortals
Rebellious Eagle
Shattered Dreamer
Mercen-X
Mogi
ANGRYWOLF
PuPu
Brunettepudding
Inferno
Crop

That's 55 by first and last name, and 21 by first name. What can I say, I like knowing names so I pay attention to them