El Dorado Station. The Showcase Theater (renamed Golden Bear Theater), was part of the original park and featured Barbra Streisand as the first of many headline performers who would appear at Magic Mountain over the years. In the 1971 season, Magic Mountain obtained permission from Warner Bros. to use Looney Tunes/Merrie Melodies characters. However, they did not continue using the characters after their first year (another Six Flags park Great America has continuously used such characters since its opening in 1976, eight years before Marriott Corporation sold the park to Six Flags.) In 1972, they began using trolls as the park mascots. The trolls King Blop, also known as King Troll, Bleep, Bloop, and the Wizard became recognizable symbols of Magic Mountain. All King Productions, a contractor, provided the entertainers wearing the costumes until December 31, 1972, when Magic Mountain took on that role. The characters were used until 1985. Also in 1972, a second flume ride named Jet Stream was added. In 1973, the park added its second roller coaster, the Mountain Express, a compact Schwarzkopf Wildcat model steel coaster. In 1974, the park also installed a new complex of spinning rides in what would later be known as Back Street. The new additions consisted of the Himalaya, Electric Rainbow, and Tumble Drum. In 1975, the Grand Centennial Railway opened in the Back Street. It took riders on a train journey to Spillikin Corners and back. The Coaster Revolution With the opening of Great American Revolution in 1976, Magic Mountain became the first park in the world to have a modern, 360-degree steel looping coaster (though previous roller coasters with loops had been built and dismantled elsewhere due to safety issues). When it was built, there was very little in the way of surrounding brush. Now, the tracks are surrounded by trees and bushes, which prevents the riders from knowing the track layout beforehand. Universal then filmed a major movie at Magic Mountain with the Revolution as its centerpiece called Rollercoaster in 1977. In 1978, Colossus, at the time the fastest, largest dual-tracked wooden coaster, opened. Following its first season, it was closed and extensively redone. When it reopened, it was a much smoother ride. In 1991, the camel hump before the last, or third, turn was replaced by a block brake. Though it decreased the speed of the ride after this particular brake, it did allow three trains