Though he took the initiative and defeated the Boss independently, he didn't have everyone sing his praises. Sky Moon lost heart immediately. Lu Li didn't comfort him, he said what he had to. If he had no way to toughen up his heart, then there might be a limit to his achievements.
Lu Li didn't take anything from this Boss.
It wasn't that the Boss didn't drop good stuff, if 'Sextant of Unstable Currents' wasn't good enough, then there was no point clearing this Instance Dungeon again.
Shame that this was an exquisite item for a mage, having nothing to do with him, a Thief.
The third Boss was Leotheras the Blind.
Leotheras the Blind was one of the five Blood Elves that was sent by Kael'thas to undergo Demon Hunter trials under Illidan.
Of those five who went to training, three had died. Only Varedis had successfully completed the training. Leotheras had survived but because he couldn't bear the training, he went crazy.