I'd be a dragoon. I like spears and I like jumping, the two hallmarks of the dragoon. And I prefer physical attackers over casters. Although I've always liked blue mages. Hmm, so maybe a mix, like Kimahri. Without the beastly looks.

My role in the party: I'd join the party out of pursuing their noble goal, I'd be at high spirits, a bit careless and also quite the cynic and the same time introvert and have a hard time showing my true feeling, eventually getting tired of being around the same little group of people 24/7 and leave the group and go my own ways, probably at a critical moment. After a while though, the party finds out that they can't go on without me and I'd actually miss the damn fella's, rejoin the party defeat the baddie and happy endings.

Now you go.