The refurbished ride by Rocky Mountain Construction features a steeper and taller coaster, thus achieving a faster speed. The original ride by the Great Coasters International was an approximately 94 feet (29 m) tall and the length of 3,291 feet (1,003 m). The table below compares the original Roar, with the updated Joker ride.

The roller coaster was well-received and opened for Memorial Day Weekend on May 29, 2016. Discovery Kingdom held a soft opening, a media preview event for The Joker, on May 25, 2016. īased on the success of previous roller coaster conversions in its partnership with Rocky Mountain Construction, Six Flags anticipated that Roar would benefit from the overhaul and transition into The Joker. The wood-steel hybrid was designed to incorporate three inversions, including a new element described as a 'step-up under-flip inverted roll', and it also received new trains themed to the Joker comic book character. Rocky Mountain Construction was contracted to perform the renovation using the company's patented I-Box steel track technology married to the existing wooden support structure. On September 3, 2015, the park revealed plans to resurrect and convert Roar into a steel-tracked coaster called The Joker for the 2016 season. In July 2015, Six Flags announced plans to permanently close Roar on August 16, 2015. The coaster featured a height of 94 feet (29 m), a first drop of 85 feet (26 m) and a top speed of 50 mph (80 km/h). When it debuted on May 14, 1999, Roar was the park's first wooden roller coaster and one of its first rides overall during the transition of adding amusement park rides to the marine mammal park. Roar was a roller coaster at Six Flags Discovery Kingdom constructed by Great Coasters International.

Discovery kingdom open