The first one is no good, great for a wallpaper but won't make a good logo. The second one is good so lets use it. The third one is too small.
Now based off the second one talk me through the BG (Background)...what should it look like? I haven't seen the series so give me an idea....maybe a dojo? Hmmm....that would be too hard...maybe we should go a different way...come on people give me some ideas!!!