Bleh. Nobody remembers me but I've been playing Jazz2 since 1998.

Well, there is:

Biohazard (WB!)
Dethman
Jeh
Onag
Noogy
Fquist
Steven Wakeman
Brian
Angel UOI
Shadow (both the J2C and JC ones.)
Stripe
Syntax
Merlin
Martin
GoldBones
AJ2F
CliffyB
Hip Chick
Pennywise
graphixJJF
Cheeze
Roaster
StevenT
Orion
Aiko
Dark MooGoo
Rocky Raccoon
Ryu
DrJones
Kaven
Action Hank
Dino
Gizmo
Astronia
Hidden
Aphrodite
Bluez
Admael
iCeD
Outlaw

(Edit: Added a few more.)