I have been in the hobby for a VERY long time indeed. My first ever character, back in the Dark Ages, was Dave@GarouMUSH. Silver Fang Philodox turned Child of Gaia (The Fangs kicked him out for falling for a Mage).
I was on the following MU* but damn me if I can remember who I played:
Darkweb
Double-Cross (I was Hestia the build-wiz)
Due Rewards
A2A
Alissa@MC
Bramble@TCbTT1
Adrian@Malice
Thomas@Malice
I was on SYE as a staffer (Sabbat Wiz) and played too many people, none of whom are memorable.
Recently
Ashur@TR
Judas@TR
Justice@TR
Marcus@TR
Aubrey@TR
Reynard@TR
Nigel@TR
Raymond@TR
Nathan@SHH
Marcus@SHH