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.

When Horne and Frazier made their WWF debut, the vicious heel duo had been repackaged as faces with a rap gimmick.

[3] 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.

[1] Mo injured his leg in a singles match against Owen Hart on the May 1 episode of Wrestling Challenge (taped April 12 in Syracuse, NY).

That summer, Mabel started to wrestle more singles matches; he was seen as the spectacle of Men on a Mission due to his size, the "special attraction" that got used to make rising stars look good.

When they asked the Gunns to come to the ring to let them apologize, Men on a Mission attacked them once again and then beat up Oscar, turning the duo heel and dropping their rapping manager.

After leaving the WWF Mo and Mabel returned to the USWA where they feuded with Brian Christopher, Jerry Lawler and The Moondogs.

Fine), Akeem Muhamad (Big Black Dog), Elijah (the Spellbinder), Shaquille Ali (Tracy Smothers), Randy X, and Queen Moishe (Jacqueline).

On December 30, Mabel was at ringside commentating when manager Paul Wylde came out and introduced the “Bahamian Heavyweight Champion” "Marly Pride".

When the big man entered the ring, Marley Pride was revealed as his former tag-team partner Mo who attacked him and the two brawled until they were separated by officials.

In 2014, Horne came out of retirement and defeated Mike King at HLW Heroes and Legends III in Fort Wayne, Indiana.

In May 2015, he worked four shows as Sir Mo teaming with Davey Boy Smith Jr. for Ultimate Championship Wrestling in Nova Scotia, Canada.

[13] On February 4 of that year he was released from hospital and made a Facebook post on his account telling them that he was in a medical rehab facility where he was still using an oxygen tank and on antibiotics.