1: Floyd Mayweather
He may be a multi-division champion and quite possible up there with the best boxers to have ever donned a pair of gloves, but Floyd Mayweather is almost universally hated.
Again this is in part down to his incredible abilities, and a large portion of jealously aimed at his apparent god-given gift, but he doesn't help himself.
His nicknames include 'Money' and 'Pretty Boy', which can offer an indication as to the type of man he is.
He may be a world superstar, and an insanely talented fighter to boot, but there's also a lot of other words that a vast majority might use to describe Mayweather... and none of them are pretty.