Dragoon, also known as Dragon Knight, 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 Dragoon's HP, the victory will be overridden by the following cutscene. So, the Dragoon does not appear in the Bestiary.
The Dragoon appears as a boss in Final Fantasy Record Keeper. He is fought in the Record of Fabul. If Cecil's dark form is in the party, their exchange will be reenacted.
Defeat without being KO'd
Jump: Ranged damage to a single target
The game practically hands a perfect score to the player, assuming that the party wasn't mauled by the previous seven tiers of this dungeon to begin with. The attacker has no inherent weaknesses, and hits frequently with his Jump attack. The player should heal those who need it while fighters attack and mages assist with their best DPS abilities. Kain can even go against himself, although nothing particularly special will happen when he does. Rydia joins the party after completion, and as a Summoner with decent Black Magic skills, she is well worth the wait. This also completes a standard mission objective
In Elite mode, Cecil's darker half could be recruited as well.