Originally housed at Expo 86 in Vancouver, Ninja was moved to Six Flags St Louis in 1989. It was built by a combination of Arrow Dynamics (who fell into bankruptcy) and Vekoma.

A classic steel roller coaster, Ninja sees guests racing around a circuit that includes an 80-foot and four inversions.

For 2016, riders on Ninja will optionally be able to wear a virtual reality headset which will take them on a high-speed journey in a fighter jet that is taking on an alien invasion, synchronized with the movements of the coaster itself.