Stone was a classic evil contractor. He partnered with Radler until the Flame dropped a building on them.
References: [The Flame #1] [1940] [corrupt building contractor whose buildings collapse; foiled and crushed in a building collapse caused by the Flame; “Well, Radler, it’s a shame that apartment house went down so soon – so embarassing! Let’s hope our new warehouse on dock street lasts a little longer! Ha ha ha!”; ]