Fine, I'll keep it as simple as possible for your human brainmeat to handle. Moirallegiance is one of the quadrants, or 'troll romances,' the pale quadrant to be exact -- It's romantic, but not in a reproductive way. That's for the red and black quadrants. Anyway, a moirail is a lot like a mentor or a bodyguard but not exactly, they keep an eye out on you.
I'm almost surprised my moirail isn't here right now, he must assume I can take you on!