Early Life
Tony Gallo is the son of a drug lord in South America. He witnessed his father kill a man, then his mother shot his father, killing him. Then his father’s security guards gunned down his mother.
Tony moved to Metropolis later in his life, starting a casino.
Kryptonite
Before the death of his parents, a green rock fell from the sky near a temple, the rock was put up on display. After some time, the rock was taken to Tony’s mansion, where once again, it was put on display.
After the death of his parents, he took the rock with him to Metropolis. Where once there, would make it’s first contact with Superman.