The VG Resource

I'm trying to put together a sprite that has a lot of SFX (the utsuho reiuji sprite) and almost all of its SFX have a black background to them. I'm not exactly sure how to work with that, since some of the sprites fade in to the background. Do I have to manually remove the black background and work from there? It'd be much appreciated if I could get some insight on this.
Thank you.

You're ripping, right? Then you should post at ripping projects or at the root of tSR sub-forum, moving it

Now on your question : if it's from the source maybe you should leave it with black background. If not, maybe it's your capture method which is flawed, did you tried another tools?

If you want to use the SFX: They have alpha transparency and depending on your engine it will look fine or not (RPG Maker XP for example has no problems with that).