Norff is the magical assistant of the Crimson Spellshop in Loch Vaan.
Norff is only truly story active in Armic's story, there he supports Armic on his hunt for the items all the way through. Only at the end, he knows something is wrong with Yun and that's why he stands on Armic's side, hoping to get Yun back to normal.
Norff comes with the innate ability to use "Thunderbringer" and is a great magic user in all elements sans Metal. Moderate Strength and Skill allow some flexibility in his build, but he truly excels with Magic.
Norff is basically a male version of Judy considering how both are ambitious young magicians schooled by two great wizards. It's worth noting that Yun and Josef were both friends before. However, both Norff and Judy never share the same scenario, hence they never truly encounter one another.