Here I go! (I just copied Catharsis' list from a few pages back, so sorry if I miss anyone who's opted in since then.)
_random_: Orthodox, reasonable religious person.
Abaddon: NESer, Forum Games, girls.
aelf: Looks like a girl.
aimeeandbeatles: He-Who-Shall-Not-Be-Named.
Ajidica: Passionate and reasonable; Beowulf.
Arakhor: Never said a mean word; intelligent, articulate; reasonable religious person.
Azash: I AM AZASH
azzaman333: The Living End, Australian, chill dude.
bigdog5994: Bigfoot, only black guy on CFC.
Bill3000: Billass.
Boundless: Abaddon's woman; needs more fiber.
Camikaze: Liked him better when he wasn't a mod.
cardgame: Hardcore brony and atheist.
carmen510: The flower avatar thing.
Catharsis: The bird, one of the funniest people on CFC, mafia conservative.
CELTICEMPIRE: Creationist, doesn't capitalize.
Cheetah: Intelligent Norwegian (I think).
Cheezy the Wiz: Communist, loves shooting guns.
Chukchi Husky: Way too hard on himself, 37-page birthday thread.
CivCube: DYOS
CivGeneral: GMod wizard, kinda whiny (sorry!

).
civplayah: Happy guy, not 28, vegan, liberal.
classical_hero: YEC, slightly strangled syntax, nice guy with crazy views.
Cutlass: Passionate liberal.
Dachs: Saints, history buff.
Darth Caesar: Homeschooled, YEC, extremely enthusiastic in mafia, then disappeared.
Defiant47: Rommel.
Domination3000: I don't trust my tongue here, so I will hold it.
downtown:

Dreadnought: Conservative.
DroopyTofu: Baby avatar.
El_Machinae: Smart, science, something of a Christian apologist, even though he's atheist.
electric926: TF2, starts games, then disappears.
Elrohir: No avatar.
EnglishCrusader: Kinda trollish.
Flying Pig: ex-military, decent chap, knows what he's talking about.
GamezRule: Liberal, atheist, needs to change his name.
Heretic_Cata: Smoking cat.
Huayna_Capac357: Linkin Park.
Hygro: Cool guy, JFK.
Integral: Numbers.
Japanrocks12: Reasonable fellow.
Joecoolyo: Jewfro, Futurama.
JollyRoger: Best one-liners in the land.
Kan' Sharuminar: KAAAAAAAAAAAAAAAAAAAAAAAAAAAAAN!
Kraznaya: Seems to hate every sports team/conference besides his own, which I'm not even sure is.
leonel: Bird thing.
LucyDuke: One of the few females on CFC, cool person.
madviking: Chill.
Mango Elephant: Has participated in many sexual acts, considering his age.
Miles Teg: The avatar with that one bald guy with a mustache.
Mise: That one picture of him playing air guitar while eating his food.
MjM: Iron cross.
Narz: Dropped out of school, chess, works out.
NBAfan: Mavs brother.
NickyJ: See Domination3000.
nonconformist: English guy.
NYHunter: Spaceship avatar.
Owen Glyndwr: Baseball, Dachs Jr., Avatar.
ParadigmShifter: Math, funny, Toad.
Perfection: Giant Death Robots, Fifty's partner in crime, most posts, smiling sun, perfect.
PeteAtoms: Courage the Cowardly Dog.
PlutonianEmpire: Blue people, definitely not a prude, willfully unemployed.
Quackers: Crazy Englishman.
RedRalph: Obama's masturbatorium, communist.
rugbyLEAGUEfan: Spaces out his punctuation marks.
Skwink: Very thin fuzztache, looks like the drummer from Panic! at the Disco, one-liners.
Smellincoffee: Former Pentacostal, now staunch atheist.
SouthernKing: Stories and Tales.
SS-18 ICBM: Science, deep hatred of anything other than pictures posted in Funny Pics thread.
SuperBeaverInc.: Minister of Silly Walks.
taillesskangaru: Stop being so hard on yourself, you're awesome.
Taniciusfox: Furry.
Traitorfish: Communist.
Verarde: Always grounded from the computer, homeschooled, YEC.
Virote_Considon: Skinhead.
VRWCAgent: One of few respectable conservatives on CFC.
west india man: Fuzzstache, looks less like Jesus than ParadigmShifter does.
Whiskey_Lord: Hates religion.
Yared: My alter ego.
ZeletDude: Baseball, small for his age.
Zelig: Snarky, Mars, computers.
Ziggy Stardust: The old dude with the hair.