A is for Angel, Alberto, Ax Man, Astonia
B is for Boarder, Bobby, BæÅüMÃ(-)Ñ, Biohazard
C is for Cheeze, Ciaran, Chod
D is for Dino, Dreama, defalcon, Ducky, Deadlock, Derby
E is for Engima. Everlasting, EvilMike, ElectroPiZZa
F is for Fôx, F quist, F!re, Fire Sword, Fl@sh, FoD
G is for Gringo, Gandalf, GoleX. Genotoxin, Ge|\|e, Goldbones, Gizmo
H is for Hippee, Haze
I is for Ice M A N
J is for JJF, and the ever popular Jazz
K is for Krezack, Kaz, Killer
L is for Laugh'n'gas, Liquid Nitrogen, Lamer
M is for milesba, mirrow, martin
N is for Noogy. Period. No.. um.. No name, Nebula, Noraa, Newspaz, Nitro
O is for Onag, Overlord
P is for those guys who used to be Penguins, Pheonix
Q is for Quo-Avek
R is for Rocky Raccoon, Roaster, Ryu
S is for Shorty, Syntax, Spaztic, Shadow RR, Shadow GPW
T is for Txl Killer, Tweety
U is for Unknown, Unhit
V is for Violet
W is for WiZard, WhiteFang, Wakeman
X is for Xeno
Y is for Yo Yo
Z is for Zap, Zero Dai

There's more that I thought of, but I'll post now.