Vainqueur the Dragon Series by Maxime J. Durand

Vainqueur Knightsbane is your average dragon: a giant, fire-breathing lizard who loves to take naps on his golden hoard, kidnap princesses for fun, and make the life of adventurers miserable. Vainqueur's only pleasure in life is to watch his treasure get bigger, one coin at a time. So when a would-be thief turned unwilling minion tells him about "classes," "levels," and "quests," Vainqueur wonders if maybe, just maybe, he should consider a career change... moreVainqueur Knightsbane is your average dragon: a giant, fire-breathing lizard who loves to take naps on his golden hoard, kidnap princesses for fun, and make the life of adventurers miserable. Vainqueur's only pleasure in life is to watch his treasure get bigger, one coin at a time. So when a would-be thief turned unwilling minion tells him about "classes," "levels," and "quests," Vainqueur wonders if maybe, just maybe, he should consider a career change. After all, why bother hunting monsters for free when you can get paid for it? less

Your favorite dragon is back, and he's richer than ever!Months have passed since Vainqueur Knightsbane, Great Calamity of his Age and best dragon in the world, discovered the class system and adventurer lifestyle. More powerful than he has ever been, the great wyrm faces a new challenge: administering the lands he conquered. At his side, his long-suffering minion Victor Dalton struggles to maintain peace in a country where taxes are illegal, angels sell insurance, and demons are the lawyers... moreYour favorite dragon is back, and he's richer than ever!Months have passed since Vainqueur Knightsbane, Great Calamity of his Age and best dragon in the world, discovered the class system and adventurer lifestyle. More powerful than he has ever been, the great wyrm faces a new challenge: administering the lands he conquered. At his side, his long-suffering minion Victor Dalton struggles to maintain peace in a country where taxes are illegal, angels sell insurance, and demons are the lawyers. Old enemies plot their revenge, and thieves slither in the dark.Vainqueur better keep his vault locked at night... less