As I have not seen this movie yet, I cant reply to the their comments. However, A child might get scared if they are too young for the film, or if they get scared easily. This also reminds me of people complaining about Sponge bob because the screen switches too fast. But then the creators of Sponge bob (Or helpers I don't have all the details) said its meant for older children. I feel like this could be the same problem with Wreck it Ralph 2. If its rated Pg (Which it most likely is) you might expect your child getting scared if they are young. Just make sure to acknowledge the parental guidance rating.