I would say, though, that you probably don't need to go crazy and limit yourself to completely innocuous everything. Try to get a sense for exactly what triggers him. For my DD, anything where families/loved ones are separated or animals or innocent creatures die or seem like they may die was a complete disaster. However, generalized peril was okay, even battle, and scary creatures were fine. For DS, monsters are a big problem, along with the same things DD doesn't like, but again, battles and fighting don't bother him.