In need of a new nick name?

My boyfriend and I are starting fresh ( long story ) He came up with
the idea of getting nick names and I agreed, He goes by Hopkins
because he really likes Anthony Hopkins. I have yet to come up with a
nick name for me. We don't want anything cute or mushy or sappy. I
also don't want a spin off of my name.

I've tried looking online but I can't find anything I like.

If it helps :

I'm NOT a girly person, I'm more of a hippy/goth type of person.
I'm quiet and I keep to myself until I get to know a person well.
I read a lot of manga / watch a lot of anime.
I do mixed martial arts and Yoga in my spare time.

eh that's about it.

Lets see what you come up with! Good luck and thanks for your time =)