The superhero theme has always been a favorite of Six Flags. This choice in superhero themes can be seen very clearly in Six Flags America in Largo, Maryland. The park has many superhero themed coasters with Superman: The Ride, Joker’s Jinx, and Batwing. In 1999 when the park went looking for a new roller coaster, it was pretty much a given that it would have a superhero themen

While the park was looking for a coaster, they stumbled upon the Vekoma Inverted Boomerang roller coaster. The Inverted Boomerang is much like Vekoma’s other famous production coaster, the boomerang, but this has the inverted coaster twist. This type of ride had already seen success in the Paramount chain with installations at California’s Great America as Invertigo and Kings Island as Face/Off. The park purchased the ride and during the offseason the green and orange structure started rising from the Gotham City ground. Two Face: The Flipside stands at a height of 160-feet and reaches speeds of 50-mph within it’s 1013-feet of orange track.

Guests make their way to the loading zone and thirty-two passengers board the train after choosing whether to face forwards or backwards for the first part of the ride. The chain pulls the train out of the station and up a steep first lift to a 137-foot high summit. Once to the top, the train is held for awhile and then the train releases. The train reaches a speed of 55-mph by the bottom. The Vekoma trains speeds through the station and riders enter the Cobra Roll and fly upwards; flipping over the first half with a Sidewinder maneuver, leveling, and then taking on the second 90-degree inversion in reverse order. Once at the bottom, passengers are then flung upwards again with the traditional up-and-over leg-flinging action. The orange rails head upwards again and the speed wears off before the ride engages on a second chain to tow the train up a second 14-story slope meeting the first at the top. The chain releases and the speed is once again unleashed as Two Face releases its wrath on riders. The train is whipped over the loop again, this time with the full five-g's being pulled, and then the Cobra Roll inverts the train twice more and sends the coaster back through the station. Flying back up the first ascent, the speed wears out and riders are lowered back into the station.

In October 2007, Two Face experienced a rather minor stall on its lift hill, but what followed resulted in a relatively major incident. While a ride attendant was attempting to get riders off the coaster, the train slipped back into the station and ripped a pipeline carrying hydraulic fluid. When the pipeline was destroyed, it sprayed its hot hydraulic fluid onto several riders faces, sending at least 10 people to hospital for minor burns. Several other guests had to be treated on-site for back and neck injuries.

While the ride had been inspected as usual, a cause of the incident could not be found. As a result, the Maryland Department of Labor, Licensing, and Regulation ordered the closure of the ride until it could be proven safe, something the park never did. They ultimately found that a safety sensor had malfunctioned and caused the coaster to roll back, but the coaster sat unopened for the entirety of the 2008 season. Combining the tarnished reputation and many breakdowns the ride suffered over the years, the ride was officially closed, sold, and removed before the 2009 season, its whereabouts now unknown.