The Boss is located within Six Flags St. Louis. It opened on April 29, 2000, and was manufactured by Custom Coasters International. It features a lift of 122 feet (37 m), a first drop of 150 feet (46 m), four drops of 150′, 112′, 103′ and 72′, and, prior to the 2018 season, a 570 degree helix.
- Theme Park: Six Flags St. Louis
- Location: Eureka, USA
- Type: Wooden roller coaster
- Height: 122 ft (37 m)
- Rough Speed: 66.3 mph (106.7 km/h)