My list might be a little old for some people but they changed the way I saw Entropia.
Disciples- Dub, Zenct, Cobra, SuggaBabe. All of them were a huge part of my experience in Entropia. Most people only remember Dub's huge Ruga find, but not long before that McCormick and himself won a full set of suprem and the Unique Dub & McCormick Terminator. All of them achieved more than I could ever hope to in Entropia.
Magam- Colourful person to have a chat with, one of the people I've known the longest ingame that's still around.
Danny Valkor & Jenavian Wiseman(sp?) - Probably the first 2 people I met in game when I stumbled my way from the SE part of the map to Port Atlantis. Very helpful to new players, some of the nicest people I met. Back around 02/03 they were a pretty big part of the game.
Farha - One of the few ubers that was around in 03. Went through a few ava's and still plays, some might know who.
Death Legion Soc. - Big inspiration to be an avid pker. Jord and Speaker to name a couple.
Also a few people who were big a long time ago.
John Silver/Eddie/John JD (Illuminati Soc) - First society I joined in the game, JD branched off to make Entropia Directory, Silver still plays occasionally (Shaolin Soc currently)
Zippo- Just an all around cool guy to hang out with or go shoot people with.
Anna Roulette/Paco Mohaho/Einstein - Some of the first people I ever hunted with, still remember it being east of Argus playing ping pong with armax and warriors.
If I sat here long enough I could probably think of a hundred more that have come and gone or are still around today. My idea of famous has nothing to do with wealth or skills, or lucky loots- It's about people who I honestly believe made an impact on the game, or at least mine personally.
I'll nominate myself for one of the oldest avatar's ingame (September 01), because it's about all I accomplished other than doing a drunken stumble onto an ATH.