Mr. Freeze (1998–2011; 2022-present) On December 18, 1996,
Six Flags Over Texas announced that Mr. Freeze would be added to the park. Just a month later in January 1997, it was confirmed that
Six Flags St. Louis would be receiving a mirror clone of the ride. The coaster would be placed in the center of the park. This would cause the park's Spain section to be renamed DC Comics Plaza. Mr. Freeze was planned to open in May 1997 to coincide with the release of
Batman & Robin.
Arnold Schwarzenegger and
George Clooney were scheduled to appear at the opening of Gotham City at Six Flags Over Texas and be the first to ride it, but problems with the launch system delayed its opening to 1998. During testing, the LIM motors had issues with overheating and
Six Flags officials could not provide the full thrust necessary to operate the ride consistently at high speeds. Park management wasn't concerned, as
Flight of Fear at
Kings Island and
Kings Dominion also had issues with the launch system. One of Mr. Freeze's trains suffered damage when the launch system closed onto the fins. The train was removed for adjustments and was later put back in place. The Over Texas location was originally located in the Goodtimes Square section of the park. When
Batman: The Ride debuted in 1999, the surrounding area was renamed Gotham City. On October 3, 2000, the ride closed due to an issue with one of the trains. When it first opened, Mr. Freeze used over-the-shoulder restraints (commonly called OTSRs), which were replaced with individual ratcheting lap bars in 2002 at both locations. In 2021, the ride was repainted in light blue. For 2009, the St. Louis Mr. Freeze was repainted with dark blue track and supports.
Mr. Freeze: Reverse Blast (2012–2022) On March 22, 2012, Six Flags announced that both versions of Mr. Freeze roller coasters at Six Flags Over Texas and Six Flags St. Louis would feature backwards facing trains and be renamed
Mr. Freeze: Reverse Blast. The St. Louis version reopened on May 5, 2012, with the help of
David Freese (then a
St. Louis Cardinals baseball player). The attraction at Six Flags Over Texas reopened on May 12, 2012.
Vanilla Ice performed a concert at the opening. On August 29, 2022, Six Flags Over Texas had announced a closing date for Mr. Freeze: Reverse Blast, slated for September 11, 2022 in an internal event. Despite this date announcement, the park clarified that the ride would be staying, but teased that the ride would be refurbished. On September 23, 2022, Six Flags Over Texas announced that the original version of Mr. Freeze would return, with trains moving forward again. ==Characteristics==