Oh dear, any Dragon Type? Well... The only one that stays pure Dragon Type even in it's final evolution is Axew, which you get via trade. Dratini is a rare find in the Safari Zone, and can be bought from the Game Corner, but upon its final evolution it gets a secondary Flying Type, which makes it take normal damage from the Electric Type, double damage from Rock, and quadruple damage from Ice. Ouch.
Those are the only two I know where to find off the top of my head, unfortunately... I would recommend taking a look at the PokeUE wikia to find the rest.