Johnny is an police officer that appears in Stealing the Diamond.
Not to be confused with Johnny Panzer the night guard.
Stealing the Diamond
When Henry rushes out of the museum with the diamond at his scooter, Johnny drives in a car to catch him, with a Prison Guard from Escaping the Prison. Then he takes up his pistol and aims it at Henry. He fails to shoot him, and then Henry picks up a rock from the road and throws it to his head. Johnny then falls from the police car and the driver says "No! Johnny! Officer down! Repeat, officer down!". This then calls in a police helicopter with a gunman onboard, to continue the rest of the scene. His fate is unknown.