Tekashi 6ix9ine cut a deal with the US government and took the stand as a star witness against two former associates linked to a violent gang. Picture: AP Photo/Luca Bruno, File

In November, Brooklyn-based rapper Tekashi 6ix9ine - known for his rainbow-colored hair and prominent face tattoos - claimed the two things he feared were "God and the FBI."

Ten months later, the 23-year-old, whose legal name is Daniel Hernandez, has a third to add to the list: his former gang set, the Nine Trey Gangsta Bloods.

Hernandez was indicted over a year ago on racketeering and firearms charges along with five other men, all of whom were named as members of the violent gang alleged to be operating a drug-trafficking enterprise. Hernandez cut a deal with the government and took the stand last week as federal prosecutors' star witness against two former associates, Aljermiah Mack and Anthony Ellison, described by the U.S. attorney's office as high-ranking set members.

Hernandez offered a rare look inside the inner workings of a notoriously dangerous and murderous street gang, which he allegedly joined to advance his budding music career, according to the New York Times. As his stardom brought in cash, Hernandez explained from the witness stand, the Nine Treys offered up street cred.

But any amity Hernandez built up with the gang all but collapsed after three days detailing robberies, assaults and drug crimes for a federal jury.

The New York Times reported that the Instagram celebrity and self-described troll listed what he said was the Nine Treys hierarchy and claimed several prominent entertainment industry names were gang members, including Harlem rapper Jim Jones and Bronx-based Cardi B, in his testimony.

The testimony shocked music artists and members of his former crew, provoking many to denounce his double-crossing and cooperation with law enforcement.

In a series of Instagram posts, rapper Snoop Dogg called Henderson a "s.n.i.t.c.h." and "a rat and a goon."

Vince Staples asked his 1.1 million followers: "Did 69 tell on you?

And in a now-deleted tweet, Cardi B corrected Hernandez, who had apparently aligned her with the Trey Nines, which she wrote was the wrong set.

Henderson also recounted a day last July when Ellison allegedly kidnapped the rapper after an internal falling out over who would control his career.

"I knew I was going to become a target," Hernandez said in court. "I knew they were going to try and hurt me."

Hernandez renounced his Nine Treys affiliation in November. Soon afterward, the FBI approached him with a warning: agents had learned about a planned retaliation from a wiretap. Authorities offered Hernandez round-the-clock surveillance, which he refused.

Days later, a dozen Nine Trey members, including Hernandez, were arrested in the racketeering roundup. Hernandez subsequently agreed to accept help from and cooperate with law enforcement.

Hernandez's future - as a rapper and otherwise - looks bleak, uncertain and unsafe.

For the time being, Hernandez remains incarcerated, serving out his own related sentence; he pleaded guilty to a slew of charges in January, including racketeering, and faces a minimum of 47 years in prison, though prosecutors promised to request a reduced sentence for his testimony against Mack and Ellison. Prosecutors have indicated he could enter the witness protection program after his release.

The Washington Post