Hm yeah this app gave me a hard time. I actually thought Monk at first -- they can be loyal as well as blunt, and even though I suppose the traits you listed here aren't really unique to monks, there was a kind of open, honest, to-the-point feel to this app which makes me think of a monk character anyway.

My second thought was Soldier. Leadership and assertiveness are definitely soldier traits, and some can be apathetic or gloomy as well. And you said you relate to Celes, who's kind of a soldier/red mage hybrid.

I can see the Dragoon too, but I think of dragoons as tending to be more closed off and reserved.

So basically I'm going to vote Soldier but I do think you have some Monk in you as well.