Definitely quirky, for all manner of reasons. One of them being that I like pokemon, yet I don't play any of the games, watch the anime, or play the card game.
To be adamant means that you don't give in under pressure.
Me? My general nature is careful. I tend to be timid in public, and quirky around a select few people. I have a face for every nature, but those three are the predominant ones.