Zordak Ragefire
 

There's a way to open up a trade window near the Zordak ragefire spawn. it's just a random trade window that opens while pressing U. I have tried giving it weapons and other things (never risked a pearl turn in) But I thought it was interesting. At the same time I don't want to see someone accidentally turn in their pearl for the cleric epic in to the wrong NPC and risk losing it for no reason.