Former WWE Wrestler Sir Mo Dies at 58 After Month-Long Hospital Battle
Robert Horne, better known to wrestling fans as Sir Mo, has died at the age of 58. The former WWE superstar, who rose to fame in the 1990s as part of the vibrant tag team Men on a Mission, passed away Sunday night at a hospital in Texas after weeks in intensive care battling pneumonia and a blood infection.
News of his passing was shared across wrestling communities and fan pages, with tributes flooding social media. Melody Gwenyambira was among the first to post, writing, “Former WWE Wrestler Sir Mo has died 💔,” sparking a wave of condolences from fans who remembered his charisma and positivity both in and out of the ring.
Horne’s wrestling career began in the early 1990s, when he teamed up with Nelson Frazier Jr., known as Mabel (later Viscera), under the guidance of their manager, Oscar. Together, Men on a Mission brought energy, humor, and a message of empowerment to World Wrestling Entertainment (then WWF). Their colorful performances and crowd-friendly personas helped redefine tag-team entertainment during a transitional era for professional wrestling.
After leaving WWE in 1996, Horne remained active in the wrestling community, mentoring young talent and promoting local shows through his own production company. His dedication to the sport earned him quiet respect among peers, even as his name faded from mainstream headlines.
“Sir Mo represented the spirit of that generation — larger-than-life but deeply human,” said one fan post on Reddit’s r/SquaredCircle community. “He made wrestling fun, inclusive, and full of personality.”
The WWE has not yet issued an official statement, but several former colleagues have expressed condolences online. Many recalled Horne’s warmth and commitment to inspiring the next generation of wrestlers.
His passing follows a difficult period for wrestling veterans, many of whom face long-term health complications related to the physical demands of the sport. Horne’s struggle with pneumonia and a blood infection underscores the toll that decades of performance can take.
As fans celebrate his memory, Sir Mo’s legacy endures — not only as a performer but as a mentor who gave back to the sport he loved.
“He may have been a Men on a Mission in the ring,” one fan wrote, “but his real mission was making people smile.”
