Jack Dragnet
A government twerp who pretended to be the head of a gang just to get enough dirt on them to make them all get arrested.
Jack Dragnet dressed like a gang leader and cussed everyone out until he got enough dirt to arrest ten people.
He said he was the boss of the gang and made them all tell him their plans so he could get them all sent to jail.
Jack Dragnet made a gang think he was the toughest guy around until he got them all caught.