First Appearance: Superman (vol. 1) #1 (Summer 1939): "Superman"
Number of Appearances: 1
Employer: Metropolis Police Dept.
Worked for: Detective Sargeant Blake
Note: assisted attempt to arrest vigilante Superman
Mooney was a nondescript police officer working under Detective Sergeant Blake in an unnamed city that was apparently Metropolis. When Blake was called to the scene of a disturbance caused by Superman, he thought he might have his chance to capture the vigilante. Superman had just thrashed the office of presumably crooked patent attorney Harvey Brown. The lawyer told Blake that Superman had just boarded the elevator. Blake ordered Mooney to hold the elevator button down for three minutes and then release it. Blake barked orders: "Keep that pressed down for a full three minutes, Mooney -- or I'll have your badge. You others, come with me!"
This action stopped the elevator from moving. (It was an older style of elevator than we are accustomed to today.) This action gave Blake and the rest of his men time to use the stairs to go to the bottom floor to prepare to capture Superman when he emerged from the elevator.
Mooney released the elevator button right on time and the elevator car was able to continue on its way to the bottom floor. But the man who emerged was not Superman at all, but simply a cowering mild-mannerred reporter named Clark Kent. Blake was angry that he had not captured his quarry, but he didn't take his anger out at Mooney, who had (after all) properly accomplished his simple mission.