1. A knight on King Arthur's round table, they are noble and brave champions who only want to protect people
2. dumbass kids on World of Warcraft that wanted to be warriors that could heal. In PvP combat they typically just stall until a real class comes along, becuase by then the opponent is usually out of mana.
1. Paladins are holy knights of honor who would never run away from a fight
2. Shield and Hearth!