Daivari signed a contract with World Wrestling Entertainment (WWE) in August 2004 and debuted on the December 13 episode of "Raw" alongside Muhammad Hassan as Khosrow Daivari, later shortened to Daivari. Their gimmick was that of two Arab Americans who were tired of the prejudice and stereotypes they were receiving after the 9/11 attacks. Ironically, Daivari would scream instructions in Persian to Hassan when working as his manager, though this was often described as "Arabic" on broadcasts. In the weeks leading up to their debut, the two men would appear on "Raw" in vignettes promoting their hatred towards "America". In the following weeks, they would back up their words with actions, initiating a feud with "Raw" announcers Jim Ross and Jerry "The King" Lawler. At WrestleMania 21 on April 3, 2005, Daivari and Hassan were involved in an angle with Hulk Hogan. While attacking injured wrestler Eugene, Hogan came to the ring and ejected both men from the ring.