JoyKill? Or do you mean KillJoy?
I'll stray away from the gold servers....
.... and list from the classic ones
SkyKnight, Nemesis, Monkey Plop, TAZ, Zorro, Rage, Jubei Saotome, Xbob42, NightFall, Geovanie Legend, Archaon, Dilandou Canavi (The Canavi Founder), Dr. Cyrix, Xavior Chill, Ace2896, Aegelos, Contego, prons, Triple H, Slayer, President Rufus Shinra, SacredSilver, Warcaptain, KJL (and his bro), Manta, sirAND Bloodvayne, Shadow Knight, Hyped, Psyker, Cybnext, CyberX, Liquid Ice, Acid Ice, Jinx, Hawk, Lonely Mirage,
i'll stop there |