Every Rocket's nightmare

Oh how I love ideas that come late in the night. speedpaint for you.
This is Damien, my Areodactyl.
Even if I dont get one in game, Damien has always been on my dream team.
He is a massive pre-historic pokemon who is very protective of my trainer self, and has no qualms about picking up a villain in his jaws and shaking them if necessary to make them leave me alone.

Now imagine you met him in the dark.