I have been thinking altogether too much about Fizz, so don't be too surprised if there's a lot of Fizz heavy content in the near future.
But one thing I've been thinking about is Fizz knowing sign language. I love that he knows it. The scenes with the little deaf kid are so sweet, and show a side of Fizz we don't usually get to see. I would love to see more of Fizz using sign. But what I've been thinking about are why and how he knows it. I haven't seen discussion around it (although I'm sure there is some).
So why and how does he know it? It doesn't appear to be something Blitz knows so I'm guessing it's not something they learned growing up. And if he learned it for performances I would expect him to use it a bit more. My theory? the explosion that took Fizz's limbs also (temporarily) took or damaged his hearing. Fire works are loud, and several of them blew up within inches of his face. I do think he has his hearing again now (not sure whether that was medical intervention like with his prosthetics, or just time and healing), but I think there is a good chance he learned sign, because he had to in order to communicate.
