Who is the best joke character and why is it Shingo Yabuki?

A super move that isn't part of a combo. I'm not sure if the definition strictly excludes reversal supers (mashing out a super so it comes out as soon as possible after you get combo'd), though.

I wanna see Orochi somehow posses Yamazaki and become the cheapest final boss ever.

It's funny because for how deranged Yamazaki may seem, he's the only one of Orochi's descendants that can resist his call and tell him to fuck off. It's those little facts that make me love the series so much and I really hope they make reviving every character worth it in XV, because the story and character development in XIV was just criminally shit.