Dubforce
Smash Sidius
Sometimes if I start up-b right at the ledge (something I tend to do after an edgegaurd), his up-b disappears and I just grab the ledge on the start-up frames. After noticing this happen a few times I tried to actually replicate it so I could use it in matches, thinking it was maybe similar to how fox's up-b will grab the ledge during startup. However, I can't get it to happen, so it must be a glitch.