Lord Knight, Paladin, and Whitesmith.
The first two because tanking is hawt (screw you, Ice Picking sins). RO was the first MMO I played, and it was a done deal. Eventually, any game I played after that had me gravitating to a tanking class and/or build.
Whitesmith? Who doesn't like bludgeoning people with their cart/money, then crafting weapons, shoving them into the cart, and repeating the process. Cart Revolution and I spent many a time together down in Clock Tower Basement four. Oh, those poor poor lizard thingies (there was a time when I knew their names by heart).
In Ragnarok Online, I was once known as Athero, a noble Lord Knight whose only wish was that he swung his sword for a just cause.
TrueSilverFox and Mon_Ami roamed Caballa together in Trickster Online, searching its ruins of splendor.
Valeria, sworn only to her sword and herself, traverses Erinn in Mabinogi with her pet silver fox, Truesilver.
"Whoa, TrueSilverFox, girl! Anyone ever tell you you look like some sun-bronzed Greek Goddess these days?"