I don't know most of the backstage faces--what's the story with this guy? All I know is he's the one in charge of TV production.
Ask Jim Cornette. I think Cornette hates Dunn more than its possible to hate a guy.
The story with Dunn, is that his dad, in the 80s, was carrying a big load of TV tapings for WWF (I think like six weeks of shows) in his car transporting them, and his car caught fire for whatever reason. At great risk to his life, he got the tapes out of the car, had they burned it would have been a huge blow to the WWF's TV, which was feldging in those days.
Thus, Vince guaranteed his son (Kevin Dunn) a job for life. Dunn has been heading up TV production since the 90s at least.
The problem, is that Dunn has questionable opinions when it comes to producing wrestling, and towards wrestling in general. Jim Cornette nearly punched his lights out during a TV creative meeting in around 1997, which you can hear about on one of Cornette's shoots, a pretty funny story ("You know, Jim, I find you tiresome"). It seems like he somewhat looks down on wrestling in general and would rather be in the entertainment business. He seems to be the only one that shares Vince's warped sense of humour, also. A lot of the stupid stuff they do on TV (like showing the crowd during backstage segments) is his sort of thing, too. Exactly how competent he actually is as a TV producer is questionable, job for life aside.
Also, the most notable thing bout Dunn is his bucky beaver front teeth (Cornette's words, to Dunn's face), which he has for some reason never gotten fixed. He's actually kind of a ghost otherwise, he almost never appears on camera, only on the other side of it.