Medusa, formerly known as Bizarro, is a steel roller coaster located at Six Flags Great Adventure in Jackson Township, New Jersey. Manufactured by Bolliger & Mabillard, the ride debuted as the world's first floorless roller coaster on April 2, 1999. It was repainted and rethemed to Bizarro in 2009. In 2022, it was repainted and renamed back to Medusa.