There are quite a few perks that come with being an UFC champion. You get a nice shiny belt to show off to everyone and having the title of "best in the world" is something nobody can ever take away from you.
Of course that doesn't stop fans from trying every day the champions on this list were on top of their respective divisions. Despite being the best guy in their weight class these fighters were routinely thrown under the bus by fans due to a number of reasons.
Some simply couldn't relate well to fans while others simply bored the hell out of us every time they stepped into the Octagon. Even worse are the ones that fall into both of those categories.
Sure, these guys had their fans that openly cheered as they graced the Octagon, but overall these fighters are without a doubt the most hated champions in UFC history.