Each of them, was an assistant to a millionaire. When one of them knew of a valuable transaction about to occur, they would ambush their boss by insisting on being there, while the other waited, in costume, for the robbery. They would then trade off, with the other being in costume and doing the robbing, and the friend acting stunned as his boss was being robbed. In essence, while one of them was doing the hold-up, in a green ghost costume, the other seemed to have an alibi, which is how they first escaped suspicion.
Jack Gray was the assistant to millionaire Thomas Powers. He was able to steal a valuable gem by insisting on being there while it was being inspected. His friend sneaked into Power's mansion, as the Green Ghost, and committed the robbery. (Earlier, the two robbed from another millionaire, but the roles were switched). This time, Jack Gray pretended to be the hero, and fought off the costumed crook, but his friend, as planned, was not only able to escape with the gem, but also took the millionaire as a hostage.
The Invisible Hood noticed the kidnapping, and followed them to a secret boathouse. There, he discovered two Green Ghosts, and he confronted, and unmasked both of them, while rescuing the millionaire. Both ghosts were sent to prison.
- 1 Appearances of Jack Gray (Quality Universe)
- 3 Images featuring Jack Gray (Quality Universe)
- Quotations by or about Jack Gray (Quality Universe)
- Character Gallery: Jack Gray (Quality Universe)