Aaron Dontez Yates (born November 8, 1971), better known by his stage name Tech N9ne (pronounced "Tech Nine"), is an American rapper from Kansas City, Missouri. In 1999, Yates and Travis O'Guin founded the record label Strange Music. Throughout his career, Yates has sold over one million albums and has had his music featured in film, television, and video games. In 2009, he won the Left Field Woodie award at the mtvU Woodie Awards.

His stage name originated from the TEC-9 semi-automatic handgun, given to him by rapper Black Walt due to his fast rhyming style. Yates later applied a deeper meaning to the name, claiming that it stands for the complete technique of rhyme, with 'tech' meaning technique and 'nine' representing the number of completion.

Aaron Dontez Yates was born on November 8, 1971 in Kansas City, Missouri. He began rapping at a very early age, and would rap the letters of his name in order to remember how to spell it. He never met his father, and his mother suffered from epilepsy and lupus when he was a child, which emotionally affected him and inspired him to "search for God." He would wander around abandoned buildings with his best friend, Brian Dennis, hoping to catch a ghost on film. In 2003, Dennis was shot and killed by his girlfriend's ex-boyfriend, which further inspired Yates' search for a higher power, as well as giving him the drive to vent his frustrations in his music.

Serj Tankian (Western Armenian: Սերժ Թանգեան [ˈsɛɾʒ tʰɑnˈkʰjɑn]; born August 21, 1967) is a Lebanese-born Armenian-American singer–songwriter, composer, multi-instrumentalist, playwright, record producer, poet, and political activist. He is best known as the lead vocalist, songwriter, keyboardist, and occasional live rhythm guitarist of the rock band System of a Down.

During his musical career, Tankian has released five albums with System of a Down, one with Arto Tunçboyacıyan (Serart), as well as three solo albums Elect the Dead, Imperfect Harmonies and Harakiri. A live orchestral version of Elect the Dead incorporating the Auckland Philharmonia Orchestra named Elect the Dead Symphony was released. In 2002, Tankian and Rage Against the Machine/Audioslave guitarist Tom Morello co-founded a non-profit political activist organization, Axis of Justice. Tankian also founded the music label Serjical Strike Records.

Tankian is ranked 26th in the Hit Parader's Top 100 Metal Vocalists of All Time.

Cameron Jibril Thomaz (born September 8, 1987), better known by the stage name Wiz Khalifa, is an American rapper. He released his debut album, Show and Prove, in 2006, and signed to Warner Bros. Records in 2007. His Eurodance-influenced single, "Say Yeah", received urban radio airplay, charting on the Rhythmic Top 40 and Hot Rap Tracks charts in 2008. Khalifa parted with Warner Bros. and released his second album, Deal or No Deal, in November 2009. He released the mixtape Kush and Orange Juice as a free download in April 2010; he then signed with Atlantic Records. He is also well known for his debut single for Atlantic, "Black and Yellow", which peaked at number 1 on the Billboard Hot 100. His debut album for the label, Rolling Papers, was released on March 29, 2011.

Khalifa was born on September 8, 1987 to a mother and a father serving in the military. His parents divorced when Khalifa was about three years old. His parents' military service caused him to move regularly: Khalifa lived in Germany, the United Kingdom, and Japan before settling in Pittsburgh where he attended Taylor Allderdice High School.

Vincenzo Luvineri (born August 19, 1978), better known as Vinnie Paz (formerly known as Ikon the Verbal Hologram), is an Italian-American rapper and the lyricist behind the Philadelphia underground hip hop group Jedi Mind Tricks. He is also the frontman of the hip hop supergroup Army of the Pharaohs.

Originally taking the pseudonym of Ikon the Verbal Hologram, he later changed his name to Vinnie Paz, after the Rhode Island boxer Vinny Pazienza. Paz originally started rapping with fellow Jedi Mind Tricks member Stoupe in his basement. Paz is known for his raw and gritty lyrical delivery. He is also known for his extensive use of studio punch-ins, seldom recording a verse in one take. His lyrics frequently contain references to religion, war, politics, mythology, conspiracy theories, and the paranormal. His more recent albums such as Servants in Heaven Kings in Hell show a more obvious approach to politics and world issues. This gritty style of Paz became apparent with the release of Violent by Design, and has become progressively more defined since its release. Vinnie Paz has a number of aliases, including Louie Doggs, Vinnie P, The Pazmanian Devil, Pazienza, Frank Vinatra, Vin Jong Ill, Rumplestiltsvin, Muhammad Al Vinejahd, and Vin Laden. Raised Catholic, Vinnie Paz is now a Muslim, which plays a major role in much of his lyrics. Vinnie is also a heavy metal fan, and occasionally uses song titles and band names in JMT tracks and lyrics.