Robert Lawrence Horne (born April 13, 1967) is an American semi-retired professional wrestler who is most famous for his time in the World Wrestling Federation from 1993 to 1996 under the ring name Mo (later Sir Mo), where he held the WWF World Tag Team Championship with Mabel as "Men on a Mission". Professional wrestling career Early career (1991-1993) Robert Horne made his debut in 1991 and soon found himself teaming with Nelson Frazier in the Carolinas-based Pro Wrestling Federation. The two were kayfabe brothers in a team known as "The Harlem Knights" with Horne performing as "Bobby Knight" and Frazier performing as Nelson Knight. The heel team was managed by George South, who led the young team to two PWF Tag-Team titles over the years. In April 1992, Horne worked two matches for WWF both on Superstars. One in a tag match with Jim Brunzell losing to the Beverly Brothers and losing to The Mountie. United States Wrestling Association (1993) In 1993, The Harlem Knights moved on to the United States Wrestling Association based out of Memphis without their manager George South. While in the USWA, the team was pushed as the “Monster threat” due to their size and feuded with Jerry Lawler, Jeff Jarrett, and other faces. Their work in the PWF and the USWA got them noticed by the World Wrestling Federation (WWF) and they were signed to a contract in mid-1993. World Wrestling Federation (1993-1996) When Horne and Frazier made their WWF debut, the vicious heel duo had been repackaged as faces with a rap gimmick. They wore bright clothes and had positive attitudes. They were teamed up with a rapping manager “Oscar” and had their names changed to "Mo" (Horne) and "Mabel" (Frazier) while the team name was changed to “Men On a Mission” (or M.O.M., the initials of the three men). The team met with moderate success in the ring but got over mainly due to Mabel’s unusual size, their fun loving personas, and Oscar’s crowd pleasing raps. Their fun loving personalities were prominently displayed when they appeared at Survivor Series 1993 dressed up as Doinks (referred to by color commentator Bobby Heenan as "Doinks on a Mission)" and teamed up with The Bushwhackers (also dressed as Doink) in a comedy match. Their next feud was against the WWF Tag Team Champions The Quebecers and they even won the titles during a United Kingdom