On the way home from church Wednesday night, the following conversation was started:
Austin: Who would win in battle, Harry Potter or Optimus Prime? I don't think Avada Kedavra would work on Optimus.
Me: Well, Harry wouldn't use Avada Kedavra anyways.
Austin: Optimus has the big cannon, so you would have to stop that.
Brett: What if Harry used Petrificalous (? - the petrifying one)
Me: I don't think that would work either. I think it only works on organisms - living things. Optimus is made of metal.
Brett: Could he use Reducto?
Me: That could work. Just make him a lot smaller.
Austin: He still has the cannon. What's the spell Professor Umbridge used to make the wall explode? Harry might could use that on Optimus.
Brett: I think Harry would win.
Austin: I think Optimus would win.