Anatomy quiz app

Here's a WIP shot (more like 3 but anyway) of an app targeted mainly at medical students. I thought it would be a nice idea to add a character that would create a certain bond with the user, hence the little googly-eyed boxes at the bottom that show you the level you're on.
I know the character is cartoon-like but its cuteness brings you closer to it and it might be a nice contrast to the anatomy related questions.

What do you think: should I keep'em or should I go with something else?

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