Despite being on the cover, the only time they appeared in the book was when Erin and Marty were trapped in "The Cave of the Living Creeps."
A Giant Praying Mantis appears in the 2015 Goosebumps film as the quinary antagonist. It is among the monsters released by Slappy. The Giant Praying Mantis chases the automobile in which R.L Stine, Zach Cooper, Hannah Stine, and Champ are inside, and manages to destroy it soon after they escape from the car. During the monsters' attack on the school, the Giant Praying Mantis attacks a student who was closest to the window. During the final battle, the mantis knocks the Ferris Wheel off with Zach, Hannah, and Champ still present Amazingly, they manage to survive without any injuries. Later, the mantis is dragged into the book with Slappy's monster army.