ryublaze
Noob
EDIT: When I made this video I COMPLETELY forgot about EX wake-up attacks having 20 frames of invincibility lol. Still this might be useful against non-enhanced wake-up attacks.
This is nothing new, just something that I've been doing for a while but never talked about. Not sure what to call it, so I just call it dagger checking.
After any Red Slide knockdown in the corner, you can jump back and throw an Air Dagger (Close), which can interrupt some wake-up attacks. If it hits, Skarlet can continue her pressure. Some wake-up attacks can beat it, but they are usually unsafe on block so your opponent has to make a read. Skarlet can also combo off of the Air Dagger against some wake-up attacks like Scorpion's Teleport, Sub-Zero's Ice Clone, and Kitana's Square Boost.
The video is kind of long so feel free to skip around to see how this works against different characters. I only go through Scorpion, Liu Kang, Kung Lao, Sub-Zero, Kitana, and Sektor but it's also effective against other characters like Ermac.