Being one of the best mixed martial artists on the face of the planet probably gets you a ticket into the UFC.
Being one of the best mixed martial artists on the face of the planet doesn't make you an automatic qualifier as a fan favorite, though.
If Brock Lesnar and Tito Ortiz proved anything in their illustrious fighting careers, it was that no matter how dominant they could possibly be, they always managed to rub a good portion of the MMA community the wrong way. Lesnar was hated because of his confidence. Ortiz was hated for his refusal to face the best.
They were champions, and they were woefully disliked.
But if history tells us anything, even being respectful and willing to challenge the best available opponents still doesn't grant you access into fans' hearts.
Scroll on through the rest of the slideshow to see what top fighters fans love to hate. To limit the amount of fighters featured on the list, only those within the top five of their respective divisions will be considered.