So I thought this would be very interesting to talk about, because some people brought up some interesting things in the moveset speculation.
I didn't really understand what was going on with the electric attack that we saw like twice in the trailer. Some people thought maybe it was a kind of slash, but there's also the idea that it could be an uncharged zap. That would mean that the zap they showed was a version that's charged (maybe zapple). I'm talking about this one they showed that takes longer to shoot out (credit to
Blade of Evil's Bane
for bringing the gif):
Well, I took a look at the other electric attack we saw, and there's a couple frames where we can see the projectile of it go through:
View attachment 228472
If you look on the left there, you can see the electric effects in a kind of circle, and that's actually the projectile going through snake and it just keeps going. It's easier to see it if you watch the trailer in slow motion at that part.
So it really seems to me that this could be zap. And the other one they showcase is actually the charged version. And considering the speed of this one, it seems rather good upclose as well. I would guess that maybe it's the regular side-b (maybe the first option if there's a menu there too).