Powell had an initial appearance before United States Magistrate Judge David S. Cayer Monday.
He and Lamonte Lloyd face conspiracy counts in the murder of Jimmy Ray Daniels Jr. in Scotland Neck and the murder of a woman in Gastonia.
Lloyd has already entered a not guilty plea in the case.
Records filed in the federal court system show Powell was advised of his rights and charges, filed a financial affidavit and was appointed counsel.
The government moved for detention and Powell was remanded to custody pending the Thursday hearing, which is scheduled for 10 a.m.
Lloyd waived his detention hearing and was remanded to custody earlier this month.
Lloyd entered not guilty pleas on nine counts against him. Most of those nine charges reflect the murders of Daniels and Cheeontah Howard in Gastonia.
The original indictment in the case alleges the murders were based on racketeering activity by Lloyd, who goes by the street name Murder Mo and Moo, and Powell, of Charlotte, also known as Savage, who allegedly killed Daniels and Howard with premeditation and deliberation.
Daniels was shot and killed while sitting in his vehicle at Grace and Eleventh streets in Scotland Neck. The state had planned to call Daniels as a witness in the case of Jimmel Horton, which ended in a mistrial. Horton had been charged in the 2013 murders of Monte Hines and Chris Harrison.
In all, 83 members of the group were indicted following a five-state raid.
The charges were related to federal racketeering conspiracy charges and charges related to murder, attempted murder, violent assault, narcotics distribution, firearms possession and Hobbs Act robbery.
A number of defendants are also charged with bank fraud, wire fraud and aggravated identity theft related to financial crimes.
The operation was a coordinated effort involving more than 600 federal, state and local law enforcement officers who executed the arrest warrants in Charlotte, Cleveland County, and eastern North Carolina.