Found them. Pages 51 and 52. Let's see how I did
Correct:
Wandering - James McCloud
Sir_Stabbalot - Mighty Gazelle
Stevey - Black Shadow
Ceric - PJ
TVMan - Micheal Chain
Vudu - Blood Falcon
Zach - Spade
Pale - Mr. EAD
Shyguy - Pico
Blackfootsteps - The Skull
Smoke39 - Zoda
Decoyman - Deathborn
Deguello - Samurai Goroh
Shift Key - Jody Summer
18 Days - Mrs. Arrow
Bill - Lily Flyer
NuclearSpeed - Silver Neelson
Mystic Gohan - Princia
Infernal Monkey - Leon
Mario - Super Arrow
Garnee - Octoman
Couchmonkey - John Tanaka
MattVDB - Captain Falcon
Mantidor - Gomar & Shioh
ThePerm - Phoenix Lestrade
BigJim - Draq
Svevan - Jack Levin
Knowsnothing - Antonio Guster
Spak-Spang - Billy
The forgotten and misspelled:
Athrun Zala was Roger Buster. And Bio Rex was Crimm. Neodymium was supposed to be Nyladrin which was MattVDB's brother. Nyladrin was Beastman. And I couldn't remember that:
Dasmos - Dr. Robert Stewart
MaryJane - Dr. Clash
Yeah, I know. It's kind of sad and/or scary that I can remember all that. Well, what happened was the avatars used for the game got so ingrained in my head as hosting, that I was able to associate that character with most people. Plus, I was playing F-Zero GX a lot at the time and after the mafia game and so the names kept getting associated with the characters. So, on the screen instead of seeing Black Shadow or James McCloud in the lead, I'd think to myself, Stevey or Wandering is in the lead. Finally, I would also try to make each death special in the game and do something based on the character so I have a little story in my mind about each person and what happened to their character. No other game sticks out in my mind as much as this one though. All that F-Zero playing cemented it in my head.