Dear Littlegiantworld,
I see that you are trying to make a game similar to Monster Rancher, but with simplified Pokemon style combat system. However, I feel that the combat system is the weakest point of all.
I picked redzilla, and I acquired all 5 moves. Sadly, They're all spam moves. There's no strategy in them.
I played "How to train a dragon" in nintendo DS, and I think that's the kind of combat/talent trees you should aim for.