Yeah some characters have little variations on what's normally said. IIRC it also changes depending on how the tag occurs (raw tag, switch cancel, etc.)
It's not about spooky actually, it's more aimed at Arturo since we've been friends for over a decade and I needed to give him a shoutout/jab lol. Having said that, there's a bunch of references sprinkled around the game, especially in the win quotes
Yeah, what Ono said is correct, the originals were taken out but you can find them floating on the net. I probably shouldn't say anything more about that though, but what Ono said is totally true!
And yes, I also did a ton of work on the original SF4, SSF4, and vanilla Marvel 3 (I didn't do that much on Ultimate since I was on SFXTK though). I was actually the one who came up with the Ken flowchart quote in SSF4