Question: Which member of Outlawz was featured on 2Pac's song Who Do U Believe In?

Context articles: Still I Rise (album)
California Love
Hit 'Em Up
2 of Amerikaz Most Wanted
Here to Save You All
Who Do U Believe In
Yaki Kadafi
Can't Sell Dope Forever
Tupac: Resurrection (soundtrack)
Trapped (Tupac Shakur song)

Still I Rise is an album by 2Pac and the Outlawz which is released as the third posthumous studio album of 2Pac, and the first album by Outlawz as a group (not to be confused with their debut "Ride wit Us or Collide wit Us").
 The album excludes some of the original line up of Outlawz and Hussein Fatal, who had left the group as he had refused to sign to Death Row.
 The album contains all previously unreleased, albeit remixed material.
 It was released on December 21, 1999, by Interscope Records.
"California Love" is a hip hop song by 2Pac featuring Dr. Dre and Roger Troutman.
 The song was released as 2Pac's comeback single after his release from prison in 1995 and was his first single as a Death Row Records artist.
 This is 2Pac's best-known song and his most successful, reaching number one on the "Billboard" Hot 100 for two weeks (as a double A-side single with "How Do U Want It") and 5 weeks at number one in New Zealand.
 The song was nominated for a posthumous Grammy Award as a Best Rap Solo Performance and Best Rap Performance by a Duo or Group (with Dr. Dre and Roger Troutman) in 1997.
"Hit 'Em Up" is a diss song by rap artist 2Pac featuring his group the Outlawz.
 It is the B-side to the single "How Do U Want It", released on June 4, 1996.
 The song’s lyrics contain vicious insults to several East Coast rappers, chief among them, Shakur's former friend turned rival, The Notorious B.I.G., also known as Biggie Smalls.
 The song was recorded in Los Angeles, California at Can Am Studios in May 1996.
 Reporter Chuck Philips, who interviewed Shakur at Can Am, described the song as "a caustic anti-East Coast crusade in which the rapper threatens to eliminate Biggie, Sean Combs (Puffy), and a slew of Bad Boy artists and other New York acts."
 The song was produced by long-time collaborator Johnny "J" and samples the bassline from "Don't Look Any Further" by Dennis Edwards and interpolates "Get Money" by Biggie Smalls group Junior M.A.F.I.A., which used the Dennis Edwards sample as well.
 The song's chorus contains an interpolation of Yellowman's 1982 hit reggae single 'Zungguzungguguzungguzeng'.
 The video, itself described as infamous, includes impersonations of Biggie, Puffy and Lil' Kim.
"2 of Amerikaz Most Wanted" is a West Coast hip hop song written by 2Pac, Snoop Doggy Dogg and Daz Dillinger for 2Pac's 1996 double album "All Eyez on Me".
 The song is a duet performed by 2Pac and Snoop Dogg.
 "2 of Amerikaz Most Wanted" was released as promotional single and was the album's second single after "California Love".
 The song peaked at number 46 on the US "Billboard" Hot R&B/Hip-Hop Airplay chart.
 The song contains an interpolations of "The Message" by Grandmaster Flash and The Furious Five and "Radio Activity Rap (Let's Jam)" by MC Frosty and Lovin' C.
Here to Save You All is the debut album by rapper Chino XL released on April 9, 1996.
 It is predominantly produced by B Wiz and only held two guest appearances from Ras Kass and Kool Keith.
 It was produced mostly by Chino's close associates, and the lyrical content revolved around dark, hardcore themes (mostly metaphorical braggadoccio), dismissing the commercialized hip hop that was starting to gain momentum at this time.
 It contains the infamous but well-known song "Riiiot!"
 which had a line that possibly alluded to the rumor of West Coast rapper 2Pac being raped in prison.
 2Pac later called him out on "Hit Em Up," and Chino responded with a freestyle dis.
 Chino himself stated that the line was not meant as a dis, and he and 2Pac were on good terms at the time of his death.
"Who Do U Believe In" is a posthumous single by 2Pac, released on a compilation album album.
 Song featuring: Yaki Kadafi, Nanci Fletcher, and Big Pimpin' Delemond.
 The song features a sample from Jamiroquai's Manifest Destiny.
The single peaked at number 56 in the airplay chart.
Yafeu Akiyele Fula (October 9, 1977 – November 10, 1996), better known by his stage name Yaki Kadafi, was an American rapper who was best known as a founder and member of the rap groups Outlawz and Dramacydal.
 Kadafi's parents, Yaasmyn Fula and Sekou Odinga, were both members of the Black Panther Party.
 Fula, and Tupac Shakur's mother, Afeni Shakur, were close friends, and Kadafi and Tupac were friends until their deaths in 1996.
Can't Sell Dope Forever is a collaboration studio album between Hip Hop groups dead prez and Outlawz.
 The album was released on Affluent Records July 25, 2006 and executive produced by Oscar Sanchez.
 Stic.man and M-1 of dead prez are most known for their revolutionary musical content, and E.D.I., Young Noble and Kastro of Outlawz are most known from their close affiliation with late Hip Hop superstar 2Pac.
Tupac: Resurrection was released by Amaru Entertainment as the soundtrack for the 2003 documentary, Academy Award nominated "".
 It includes several previously released 2Pac recordings, including "Death Around the Corner" from "Me Against the World", "Secretz of War" from "Still I Rise", Holler If Ya Hear Me from "Strictly 4 My N.I.G.G.A.Z." and "Rebel of the Underground" from "2Pacalypse Now"; and unreleased 2Pac verses re-constructed into new tracks such as "Ghost", "One Day at a Time", and "Runnin (Dying to Live)".
 Eminem produced major parts of this album.
 The song "Runnin (Dying to Live)" won the Top Soundtrack Song of the Year award at the 2005 ASCAP Rhythm & Soul Music Awards.
 The Album Features The Notorious B.I.G., Eminem, 50 Cent, Outlawz, & Digital Underground.
 "Intro", "Ghost", "Death Around The Corner", "Bury Me A G" and "Str8 Ballin'" do not actually feature in the movie, but appear on the album.
"Trapped" is a song by 2Pac that deals with police brutality.
 It was a single from his debut album, "2Pacalypse Now".
 The first verse tells a story of 2Pac being harassed by the police, one even shooting at him.
 He then fires back and says he did it because he was tired of constantly being profiled and abused by police officers.
 2Pac then depicts the police chasing after him and eventually cornering him.
 He then ends the song with the line "I'd rather die then be trapped in the living hell", implying if forced into a corner he would rather die than live life in a cell.