Saed made his debut on the August 18, 1990 episode of WCW WorldWide, teaming with Scott Williams in a match against WCW World Tag Team Champions Doom. He would make his singles debut against J.W. Storm on the October 27, 1990 edition of World Championship Wrestling. Over the following years, made appearances with the World Wrestling Federation and World Championship Wrestling as a jobber.
Saed made his Extreme Championship Wrestling debut on July 1, 1995 alongside New Jack as "The Gangstas", and in their Hardcore TV debut on July 20, the Gangstas would quickly become faces and a draw for ECW, regularly bringing weapons such as guitars, crutches and staple guns in trash cans and shopping carts to the ring. The Gangstas would enter a lengthy feud with the Public Enemy that would last until the beginning of 1996, where the Public Enemy would beat the Gangstas in a street fight. Several months later the Gangstas would feud with the Eliminators, challenging them for the ECW World Tag Team Championship on several occasions before finally winning them on August 3. Although they lost the titles several months later in December, they would become two-time champions on July 19, 1997. Following the loss of the second championship, Saed split with New Jack and left ECW.
Saed would return to ECW on February 12, 1999 at Crossing the Line '99 in Queens, New York. Mustafa reunited with New Jack to battle the Dudley Boys, only for Mustafa to attack his partner, revealing himself as the mysterious benefactor who wanted to run the Public Enemy and New Jack out of ECW. Now known as Mr. Mustafa, he would be defeated by New Jack at Living Dangerously 1999 and leave the company again by May.