Velderoth Questline for Zero.

Been broken since Zero was added unless I missed something; made a post about it a while back:

Zero can't fight Treglow/Victor/Velderoth. You do all the prequests up until "Nova Troubles" which should let you start "Road to Treglow", but you never receive the quest.

 Screenshot

It wouldn't be that hard to just make them not give WP for being a boss kill, Nexon. >_>