Crixus's mouth was always open
One thing I found really weird about Crixus in the prequel was how his mouth was always hanging open. He looks like a weird dropkick. But it looked forced. I'm pretty sure he would have been told to do that. (he doesn't do it in the other seasons). I actually mentioned it. Then in the final season, Spartacus or Gannicus actually mentioned how he used to be 'an open mouthed so and so' or something like that. It's pretty ridiculous. I would have rammed a wooden sword into his ugly open mouth.