hey what is all this evil and demond stuff on the new game and how do anda use it and can anda use it for all the characters atau just some of them?

What? The only ones who's had demonic powers were Akuma Ryu mostly, & it's been around since I think SF Alpha.

There are characters who can do some moves like Akuma atau other dark powers but for fun, its not related to the jalan, street Fighter story.