|Season||Fairyland Pretty Cure!|
|Hair Color||Dark Blue|
His first appearance is in Episode 1, Helen was called him, along with Infelici and Méfiance. Helen say that called them because want that they prevent the birth of a pretty cure, they are very surprise, because they think that destroy all pretty cures, Helen egree anf say that feel a horrible feeling of happiness, Infelici say that will kill this pretty cure, before she (the pretty cure) birth. Helen say that leaves this responsibility in her hands and Infelici leaves.
Mensonge is a selfish boy who don't care for the others peoples. Mensonge dislikes of happiness, laughs or smiles, he also can be very rude, because, Infelici ask a favor to him and he gives a very rude answer. It is no longer enough to be selfish, Mensonge also is a first class liar, recive the nickname of "Mr.Lie" (ライさん Rai-san). To create a Hakai, he chose as a victim, peoples who lie.
Mensonge, like the other commanders, can transform the peoples into Hakais.
Mensonge's voice actress, Shōtarō Morikubo, has participated in an image song for the character voices. This duet is sung with, who voices Kiyomi Asai who voices Infelici and Noriaki Sugiyama who voices Méfiance.
- Mensonge means "Lie" in French.