Why are these roadies contestant fighting in the show?

Any idea who these roadies contestants are and why are they fighting in the pre-look of the show? Any backstory as to why they hate each other. 

You on about the outhouse fight right where the voting for BBH entry took place?

Even I want to know what the deal is and why those 3 monstrosoties were ganging up on that other lass.

Most importantly why have this voting shizz only for them?

And how was one to know about this voting malarkey when show hasn't even aired yet?