I’ve never thought about what my favorite Dragon-type Pokémon is,
specifically. But it would probably be Altaria (because it’s
beautiful), Druddigon (because it’s intimidating), and Hydreigon
(because it’s cool). Blue is my favorite color, and I’d choose
these three for their looks. Also, Altaria’s a good Pokémon to
teach Fly to and a mixed attacker, Druddigon’s a physical attacker,
and Hydreigon’s a special attacker with really cool typing,
although the introduction of the Fairy type was a huge blow to such
a cool type combo. At least the Gen that introduced Fairies also
removed Steel’s resistance to Dark-type moves (and Ghost-type
moves, too, but that’s not important to this team).