Mr. Freeze: Reverse Blast, previously known as Mr. Freeze, is a shuttle roller coaster located at Six Flags Over Texas in Arlington, Texas and Six Flags St. Louis in Eureka, Missouri. The steel coasters feature a linear induction motor (LIM) launch system that accelerate riders from 0–70 mph (0–113 km/h) in 3.8 seconds. The two installations are mirror images of one another and are based on the famous Batman villain Mr. Freeze. Originally, they were themed after the 1997 film Batman & Robin prior to a conversion in 2012 to operate backwards.