This is hard...So I'll list them in no particular order, or maybe partially the order I seem to remember meeting them (which is not really exact). If you're not listed here, it's either because I don't know you very well, or because I am writing this in a hurry and missed you :P
Nappa
Aftershock
Scarlett
Wyroko
Axel
Zurkiba
Kae
CheeToS
Caius
Geno
Rabid
Jeff
Farin
Signas
Karsh
Scream
Cross
Gladiator
Vlad Taltos
--Chris--
Corpse
Arwen
Androk
Hurumi
Kramer
Jackal
There are some other people I'd list but I simply don't know them as well as I know these people. And I still can't remember everyone, and I'm in a big hurry, so :P