Kid Cudi arrives at court for Sean "Diddy" Combs trial | AFP

Rapper Kid Cudi arrives at the Manhattan Federal Court, expected to testify in the trial of Sean "Diddy" Combs. Combs, 55, is facing federal charges of sex trafficking and leading an illegal sex ring that enforced its power with crimes including arson, kidnapping and bribery. His ex-partner Cassie testified last week that Combs in late 2011 had become enraged when he discovered she had been seeing Kid Cudi, whose real name is Scott Mescudi.