By Mackenzie Cummings-Grady 50 Cent trolls Diddy over allegedly traumatizing Kid Cudi‘s dog and lighting his car on fire. On Thursday, Kid Cudi arrived in Manhattan to testify against Diddy in the disgraced mogul’s ongoing criminal trial.

Kid Cudi — the rapper who had a brief relationship with Cassie Ventura, Combs’ former girlfriend — is expected to testify after Kaplan, prosecutors said yesterday.

Mr. Combs, they say, used his power and wealth, along with violence and threats of blackmail, to coerce women into complying with his elaborate sexual demands that included commercial sex workers.