Since Sean "Diddy" Combs' criminal trial began, Michael B. Jordan, Usher and former President Barack Obama are just a few of the famous people who've been name-checked in the courtroom.

Former President Barack Obama was unexpectedly referenced during testimony in the ongoing federal trial against music mogul Sean

American famous singer and songwriter Usher has been dragged into Diddy's mess as a witness identified him as a person of interest in the rapper's trial.

Usher may help in the Diddy case after seeing a fight between Diddy and Cassie in 2010. Another singer, Dawn, also spoke about Diddy hurting Cassie many times and threatening her.

Singers Usher and Ne-Yo and a hotshot music exec were at a restaurant when Sean “Diddy” Combs punched Cassie Ventura in the stomach, according to dramatic testimony in Manhattan court

Danity Kane member Dawn Richard testified about witnessing Combs attack Ventura in the presence of other high-profile names multiple times.

Diddy’s trial featured mentions of Kanye West, Michael B. Jordan and other stars as jury selection began in federal court

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.