Arthur Simonson (Earth-90: Pre-Crisis)

"Right! Junior made a fortune on the insurance!"

- Fosnight to Barry Allen about Arthur Simonson fortune

Arthur W. Simonson was a crime boss that owned an illegal casino.

Early Life
At some point around 1975, Arthur hired Noble John Spanier to cause a fire that killed his father in order to earn his money.

At some point, he helped the young lawyer Thomas Castillo to become a district attorney in order to have a "friend" in high places.

The Fires
In 1990, Arthur operated an illegal casino that caused some trouble that lead him in court. Arthur's lawyer managed to humiliate Thomas in order to convince the jury that he was not guilty. Later, Arthur met Thomas at his illegal casino where they talk about how Thomas shouldn't be mad at him for losing since he was the reason why he was a DA in the first place. For weeks, he has hired his old friend Spanier to burn multiple historic building on the river front in order to build legitimate building such as hotels casinos due to the fact that gambling would be legalized soon. Arthur hired Spanier again but this time to burn the Old Customs House. Days later, a man entered a casino and managed to earn a quarter of a million. Arthur interfered and told him to leave. Afterward everyone in the casino won, and he was forced to close for the night. Thomas showed up in his casino later and revealed that "the Flash" is on his payroll and that he caused him to lose all his money, but he will stop if he works with him. Later, Megan Lockhart a private detective was brought by a security guard with evidence that could send them to jail. After she kicked Thomas, Arthur, ordered his guard to execute her and dump her in the river. Moments later, the Flash showed up and beat all of Arthur's goons, and disarmed him leaving him to be arrested by Lockhart. Later, after Castillo's death, it would be deduced that he was the one that placed the bomb under his car.