A Link to the Past
A group of six Armos Knights is the boss of the Eastern Palace in "The Legend of Zelda: A Link to the Past". They guard the Pendant of Courage in the first dungeon. Link can quite easily beat them by sword slashes ( five for each Knight) or arrows (three for each Knight). They fight by jumping around in a circle. Once their numbers are diminished, and only one remains, he will turn red and attempt to crush Link. After beating them Link obtains the Pendant of Courage and a Heart Container.
They also appear in Ganon's Tower. They have to be defeated one more time to advance to the top of the tower, where Agahnim waits. They are defeated the same way, but Link has stronger weapons now, so the fight is a bit easier.