Count down the first 50 of the best athletes to ever step foot in the UFC Octagon, as determined by statistics, historians, media, fighters and fans.

Count down the second 50 of the best athletes to ever step foot in the UFC Octagon, as determined by statistics, historians, media, fighters and fans.

Count down the best athletes to ever step foot in the UFC Octagon, as determined by statistics, historians, media, fighters and fans.

Crack into the top fifty fighters to ever fight in the UFC Octagon, as determined by statistics, historians, media, fighters and fans. Featuring Conor McGregor, Brock Lesnar, Nate Diaz and more.

Twenty more of the best fighters to ever grace the UFC Octagon are revealed in this list, as determined by statistics, historians, media, fighters and fans. Featuring Ronda Rousey, Robbie Lawler, Dan Henderson, Bas Rutten and more.

The UFC's definitive -- and debatable -- list reaches the top ten. See who takes the top spot in this ranking of all-time greats as determined by statistics, historians, media, fighters and fans. Featuring Chuck Liddell, Matt Hughes, Georges St-Pierre, Anderson Silva, Jon Jones and more.