#7 Really
So yep, Miz makes the list twice now. At least he is definitely never going to be a face within the company. Maybe some of you have experienced this on your own, or maybe you've seen it in videos on the internet, but think about two people having a serious argument that looks like it could escalate into a physical altercation.
Now think about one of those people saying something that the other person “Really” has no comeback for. The person with no comeback will probably just stand there for a few seconds, dumbfounded, and then say something along the lines of...Really? It all does come back to him being a child again.
He might as well say "I know you are, but what am I" like a school child would. It can just get under your skin and really make you hate the character more and more every time you hear it.