Monk (Final Fantasy IV 2D)

Yang is a boss from Final Fantasy IV. He was mind controlled by Golbez after the seperation from Cecil and Cid and Rydia. To initiate the battle Cecil must talk to Yang at the bar at Baron.

Strategy
This battle isn't too hard. Make Cecil use physical attacks, Palom and Tellah should use their best offensive spells and Porom should heal. Despite his high HP, only a fraction of Yang's total health needs to be taken off for the battle to be won.