José Aldo (born September 9, 1986) is a Brazilian mixed martial artist, who competes as a Featherweight in the Ultimate Fighting Championship. Aldo was the fourth and final WEC Featherweight Champion and thus, became the first and also the current UFC Featherweight Champion during the UFC/WEC merger. Aldo is primarily a Brazilian jiu-jitsu black belt, but has won the majority of his contests by KO/TKO. More: en.wikipedia.org.