There's been many fine roleplayers. I forget some of the names for some from way back in the early days, but the world of Sosaria has been rich in great actors from day one.
For "interesting", and I'll add "unique", one stood out to me. One who reminded me of a present day character very much, I might add. She was a young girl who was found in the woods, and I think grew up in the woods from before her memory, and loved to play with magic. He words were mostly ended with an "ies", and she greeted many an adventurer with "greeties" and a smile. I don't recall her name, but her spur of the moment roleplay was top notch.
Another great roleplayer was Blitz Phoenix. He who charmed the ladies with his smooth tongue and stole hearts as much as the riches he amassed. Many early rares images here at Stratics were supplied by him. I remember when he was running for Mayor of Yew, charming the former Mayor, Mythra, I presume to keep her out of the race (*chuckles*). Whe Trebr's father, Drab Mintr found out about their romance, he set about making jokes and teasing Blitz to no end, finding the idea of Blitz ever settling down too much to control from good hearted laughter. But Blitz wanted him to shut up, so quickly cut up some (at that time) valuable "Ranger Armor" and made a pair of boots for old Drab Mintr. The value of roleplay was held higher than mere "rares".
Maximilian, and I usually spell the name wrong, was another great roleplayer, making you feel like you were really there, in Sosaria, with him.
It was the spur of the monet stuff that has always been my favorite roleplay. And the one moment that always comes to memory for me was in such an incident. It was the early days, few players even had the recall spell yet. PKers were dominating the lands, and the rest of us, if we weren't in a strong guild had a real struggle with keeping any gear at all. I'd moved from Yew to Vesper, because there was a room in Covetous filled with crates that spawned stuff all the time. And anything you could sell was worth quite a bit. I spent several weeks there, mostly losing what I gathered to PKers before I could get back to Vesper, but trying all the same. I got to know some of the others who went to this room, as we were all regulars in the same boat. I don't recall the name, but onme of them was a fine roleplayer with a great sense of humor.
One day, while we practiced our hiding skills while riffling the crates for goodies, a noted guild of PKers opened a gate in the middle of the room. I'd never even seen a gate before. In they come through the gate. They were the Shadows of Britannia, one of the most infamous PK guilds on GL. Led by Spectre (a fine roleplayer himself who turn to PKing), who led the building of the first Mage Tower on any shard in Moonglow. They immediately set about killing everybody who wasn't hidden in the room, and all but Spectre himself left in chase of those who made a break for it.
So there I was, hidden in this room, the only way out was past this band of feared and powerful PKers out there chasing down everyone else, and standing in the middle of the room was Spectre. I knew he was "tracking" for anyone hiden in the room, like myself. I didn't know if anyone else was there, but Spectre began the casting of the Reveal spell. Was it me? No, it was this other guy, who I called "friend", and in he popped into view. He didn't run, instead he said "Oh!, Well! Hello, I didn't see you there." This started me laughing right then, but nothing like what was to come.
Spectre then cast Explosion, followed by Paralyze, and froze him in place just after the Explosion went off. He started casting another spell to kill him, and my friend said "Lets..." the spell went off, but he was still alive so Spectre began a lightning spell to kill him. "...be reasonable". and then he died as the spell landed. I cracked up laughing so hard I had tears in my eyes. I was able to make a mad dash for it out of the room, and past Spectre, even as I had trouble seeing for the watery eyes I had. I actually made it away, but was later killed in the dungeon as I poked around out of curiosity of what the Shadows were doing. But I never forgot my friends sense of humor.