4.5 stars. This was the perfect graphic novel for me! I'm enjoying getting into this genre and this is my favourite graphic novel so far (out of the 2.5 which I have read). The characters have FANTASTIC names in this book. I really liked the villains and heroes, and how they were portrayed as real people. I also was really entertained by Nimona herself; she was at times annoying and out of control, but also endearing and bad-ass! I also liked the backstory behind Sir Goldenloins and Ballister Blackheart. 
 There was plenty of action. I've discovered I really prefer reading action-packed graphic novels compared to movies/TV, because there's no real noise and it's only as violent as my mind imagines it. I could hardly put down Nimona, it was a great book! 
 The book lost a half star in its rating for the ending. (view spoiler)[I was confused by the openness of the ending. It was nice that Nimona was never "tamed" and that we got to see that she is out there still. 
 But I really would have liked to understand a few more of the details behind her shapeshifting and how it was that she was able to survive that explosion. (hide spoiler)] 
 I would recommend this book if you are looking for a way to ease into the graphic novel genre! Also if you would like something that's fun and exciting and adventurous, this is a great read! Awesome art as well. Loved it!