Douche-behemoth
a term used to describe someone who is too much of a douchebag to even be called a douchebag; their douche-ness has far surpassed normal douche level.
"dude, that guy is such a douche, he's far beyond the level of douchebag."
"Yeah, he is a douche-behemoth."
"Yeah, he is a douche-behemoth."