Hi /r/watch_dogs, I'd like to ask you something, thanks in advance for your answer!

I am going to do a parkour video where I'd like to be dressed as one of the WD character (most likely I'll be Josh, because I already have clothes that look similar) and if I do, I'll be pretending to use hacks, break into a building, "hack a tower" (break a metal box with circuits inside, you know) and that kind of stuff, and using my phone while doing parkour tricks. I've never uploaded a video, and I've never cosplayed anything so this is going to be my first attemp at everything.

The question is: If I cosplay any Ubisoft character and act like I'm him (obviously saying that I'm just a fan and not the real guy), am I breaking any copyright law or something? I know the laws about parkour and trepassing and all others, I got a private place for parkour and I won't be doing anything illegal, but I don't know what happens if I upload a video of cosplay from a product. Can you help me? Thanks!