[@Rune_Alchemist] You can be a dragonoid or ryuu-jin who can turn into a full dragon, if you like, but dragons are, aside from really scarce, really prideful, as in any kind of lore. 

They would not readily accept a puny human as its master. Or a demon. Or a fallen angel. 

And you are making me want to make yet another character to fight for the dragon familiar >:)