Kid Cudi is expected to testify in the Sean "Diddy" Combs trial about his brief relationship with Cassie Ventura and threats Combs allegedly made to blow up his car.

Kid Cudi testified Thursday against Sean “Diddy” Combs, detailing a Molotov cocktail attack on his Porsche and an alleged break-in he attributes to the music mogul.

Kid Cudi, whose real name is Scott Mescudi, was called as a witness by the prosecution. Mescudi, the "Pursuit of Happiness" rapper, was once in a brief relationship with Combs' ex, Casandra "Cassie" Ventura .

Jurors have heard various names as the trial of Sean "Diddy" Combs gets underway, which include a wide array of celebrities.

Sean “Diddy” Combs’s federal sex-trafficking trial continued on Day 9, where Kid Cudi testified about his Porche being set on fire as Mylah Morales detailed alleged abuse.