The Dragonknight, one of the 4 original classes to release with the base game.
These skilful masters-at-arms using the ancient Akaviri martial arts tradition of battle-spirit, and wield fearsome magic that pounds, shatters and physically alters the world around them. - As the in game description goes.
Their class theme revolves around fire, poison, and earth. Like that of a dragon. Dragonknights are known for having some incredible damage mitigation and self heals, while being able to push big damage in a melee area around them. Making them particularly effective tanks, melee DPS, and PvP options.