Previously known as Bizarro, Medusa was installed at Six Flags Great Adventure in 1999 at a cost of some $15 million. The floorless roller coaster was designed by Swiss firm Bolliger & Mabillard, and currently boasts more inversions (seven) than any other coaster at the park.

After plunging down a 132-foot first drop, riders on Medusa hit a top speed of 61 miles per hour. They then race through a 199-foot vertical loop, a 95-foot diving loop, a zero-g roll, a cobra roll and interlocking corkscrews.

In 2009, the coaster underwent a transformation with new pyrotechnic, water and fog effects being added and was named after Superman's evil alter ego, Bizarro. Re-painted yet again it has returned to its original name, Medusa.