Sergeant Mancia is a police sergeant of the Beverly Hills Police Department. Sgt. Mancia was investigating numerous robberies throughout Beverly Hills that three burglars stole $15,000,000. When the robbers were captured with the help of Papi, Chloe, their puppies, Pedro, and Delgado, Mancia convinced Mr. Kroop to let the Cortez family know that there was a $250,000 reward for their capture which they can use to pay off the loan.
After hearing the involvement of the Anti-Hunters having a part of the deaths of Mr. Kroop, Judge McKible, Colleen Mansfield, and the three robbers, Sgt. Mancia, along with several law enforcement, became involved within the string of murders that's happening during the course of summer where he became a target of a novelist for her own personal benefit.