When Cudi takes the stand, he will be the third well-known music industry figure to take the stand in Combs' trial, after Ventura and former Danity Kane singer Dawn Richard. George Kaplan, Combs' former personal assistant who took the stand Wednesday, began the day there Thursday.

A handful of witnesses took the stand in Sean Combs' sex-crimes trial, including a psychologist, a federal agent and a former aide.

The 55-year-old hip-hop mogul has been charged by federal prosecutors with sex trafficking, racketeering conspiracy and transportation to engage in prostitution.

Sean “Diddy” Combs’s federal sex-trafficking trial continues on Day 9, with Kid Cudi and ex-employee George Kaplan expected to testify.

Regina Ventura, the mother of Combs' ex-girlfriend Cassie Ventura Fine, told the court on May 20 she was "physically sick" over the rapper's alleged abuse and said she was once pressured to send him $20,000 after he raged at her daughter. "I was scared for my daughter’s safety," Ventura told jurors.

Sharay “The Punisher” Hayes testified that he was hired by Diddy and Cassie Ventura multiple times for hourslong “sexy scenes,” saying Diddy was in charge but he never saw violence, cameras or drugs.

Sean “Diddy” Combs’s federal sex-trafficking trial continues on Day 7, with former assistant David James, a personal chef and a male escort, among testimonies.