The language is Latin! Draco is the Latin word for 'dragon' or 'snake'.My family all made pen names that had shadow in it somewhere. We'd take a name, animal, or creature we liked and something else and mix it all up to make our pen names. I really like dragons so I took the name Draco, which translates to dragon in some language I can't think of right now, and mixed it with shadow and dragon to come up with Draco Shadowdragon. I know totally repetative, right?