Siala-Mou Siliga known as ‘Mighty Mo' is a Samoan kickboxer, boxer and mixed martial artist and a Bare-Knuckle Boxer who competes in the Heavyweight division.
His K-1 achievements include winning the K-1 World Grand Prix 2004 in Las Vegas II and the K-1 World Grand Prix 2007 in Hawaii tournaments. In mixed martial arts, he competed for K-1 Hero's, Bellator MMA, DREAM, Road FC and also participated in the Dynamite USA and Dynamite 2008 events. On September 24, 2016 Siliga won the Road FC Openweight Tournament at Road FC 33.
He made is Bare-Knuckle debut on Ken Shamrock's Bare-Knuckle promotion Valor BK. He competed in the Heavyweight Tournament Semi-Finals and won against Rameau Thierry Sokoudjou. In the same night he competed in the Heavyweight Tournament Finals and lost against Mark Godbeer.