Dragoon (Final Fantasy IV 2D)

Dragoon is a boss from Final Fantasy IV. It is an unwinnable scripted battle that takes place in Fabul's crystal chamber. Even if Cecil depletes all of Kain's HP, the victory will be overriden by the following cutscene.

Strategy
Kain will use Jump on Cecil, and whether the player manages to damage Kain in between, the battle is due to end after two or three jumps.