Roulette's grandmother was a Golden Age villain of the same name, who ran a conventional casino and fought Mister Terrific, as well as having a relationship with his brother, Ned. Both Ned and Roulette have been retconned into Mr. Terrific's history, and do not appear in the original stories. The current Roulette believes Terry Sloane to be her grandfather, rather than great-uncle, and sees the current Mister Terrific as an unworthy successor. Her casino ("The House") is a superhuman gladiatorial arena, capturing heroes with teleporter technology similar to Holt's T-Spheres, and pitting them against each other, while various supervillains bet on the outcome.