[2] Located in the Crackaxle Canyon section, it was designed as a dive coaster model and was manufactured by Bolliger & Mabillard.

[6] On July 28, 2021, Six Flags Fiesta Texas announced Dr. Diabolical's Cliffhanger for the 30th anniversary of the park in 2022.

[10] Soft opening for the roller coaster began on July 29, 2022 for season pass holders and the news media.

[16][17] As guests enter the queue line for the roller coaster, they will find themselves immersed in the story of Dr. Diabolical and her evil quest to create menacing creatures to frighten the world.

To bring her creations to life, she has constructed a machine to capture the essence of human adrenaline and fear.