MechaTarrasque
Hero
John Gwynne's Bloodsworn Saga which has dragon-blooded people, reinspired dragonborn for me. Dragonborn are like those Yuan-ti that look like people (or whatever the primary humanoid population is) except with a few reptilian features and a breath weapon that can be used rarely. However as dragonborn PC's level up (or NPC's gain power), they develop more dragon-like features, and eventually even their type changes to dragon.