Les Pyjamasques et le Grogarou (English: The Pajamasks and the Big Werewolf) is the first book of Les Pyjamasques which was published by Éditions Gallimard on March 29, 2007.

Official Summary

It's midnight, Yoyo, Gluglu and Bibou are not in bed, they're out playing acrobats! But is it safe to go out at this hour? Do they know that when the moon is round, strange creatures roam in the dark and growl? "Not even scared, not even scared!" scream Les Pyjamasques. But what is this beast? Les Pyjamasques fight the Grogarou that looks like a big nightmare and give small readers the feeling of being able to overcome their nocturnal anxieties.


  • Original Yoyo (first appearance)
  • Original Bibou (first appearance)
  • Original Gluglu (first appearance)
  • Grogarou


The book begins with the Original Les Pyjamasques wandering through the night doing their acrobatics as the clock strikes at midnight.

The Original Les Pyjamasques were interrupted by Grogarou who roared at their faces, but the heroes proclaimed that they are not afraid of him and retaliated by screaming at him which caused him to fall backwards with surprise. Then the Original Les Pyjamasques started playing around with him, wondering who Grogarou is.

Angrily, Grogarou threw them off his back and reveals his plan that he is going to eat the heroes raw as stated that during the full moon he becomes a werewolf. With that, the Original Les Pyjamasques try to evade pursuit from Grogarou, Original Bibou tries using his cape to trip Grogarou, but he is unfortunate as his cape was caught by the monster who attempts to eat him while protesting that he has school tomorrow. With bravery, Original Yoyo and Original Gluglu rush to Original Bibou's rescue by lunging at Grogarou, and this caused Original Bibou to break free from Grogarou and used his wings to hide the moon.

Due to the result, this caused Grogarou to shrink into Ptigarou. However, the Original Les Pyjamasques prefers him to be at a "petite" format in which Ptigarou agreed proclaiming that he feels lighter.

At the rooftops in which the Original Les Pyjamasques and Ptigarou met, the heroes decided to give him sunglasses as a gift. Though, this doesn't faze Ptigarou, but was happy that he can watch the moon without turning back into Grogarou. The Original Yoyo asks Ptigarou that if he would had really eaten the Original Les Pyjamasques raw, he disagreed and prefers to have the heroes cooked beforehand. As he took off his glasses, this caused the heroes to ran for their lives.


  • This book marks the first appearance of the original counterparts of Les Pyjamasques.
Book list
Classic Universe
| Les Pyjamasques et le Grogarou | Les Pyjamasques au zoo (Mass Market Paperback) | Les Pyjamasques et Roméo Mécano | Les Pyjamasques et Lilifée | Les Pyjamasques et Utupë, l'esprit de la forêt | Le secret des Pyjamasques | Les Pyjamasques et les mascrapules | Les Pyjamasques et le père Noël rebelle | Les Pyjamasques et le marchand de sable (Mass Market Paperback) | Les Pyjamasques et la machine à bisous | Les Pyjamasques et la soupe à la citrouille | La petite sœur des Pyjamasques | Les Pyjamasques et le sablotin | Les Pyjamasques et le croque-chaussettes | Les Pyjamasques et le rêveur de l'arc-en-ciel | Les Pyjamasques et Magistère la sorcière | Les Pyjamasques et Energuman | Les Pyjamasques et le robot-blizzard | Les Pyjamasques sauvent la nature |
Mainstream Universe
| Les Pyjamasques et l'opération zéro | La Légende des Pyjamasques | Les Pyjamasques et le cadeau de Sorceline | Les Pyjamasques et la graine d'Orticia | L'école des Pyjamasques | Les Pyjamasques et la momie d’Apophis, Tome I | Les Pyjamasques et la momie d’Apophis, Tome II |
| La minibibliothèque des Pyjamasques |
| Bibou et la chasse aux trésors | Catboy Does it Again | Good Night, Heroes | Gluglu roi de la glace | Hero School | Into the Night to Save the Day! | It's Time to Save the Day! | Le Pyja-Robot | Meet Catboy! | Meet Owlette! | Meet the Heroes... and the Villains, Too! (Australia, French) | Meet PJ Robot! | Meet the Wolfy Kids! | PJ Masks and the Dinosaur! | PJ Masks Make Friends! | PJ Masks Save Headquarters! | PJ Masks Save the Library! (Australia) | Super Team | Super Moon Adventure | Time to Be a Hero! | To the Cat-Car! | PJ Masks Storyboard: Race to the Moon | Vive la rentrée avec Yoyo! | Bibou et le Ninja-football | PJ Masks: Battle of the HQs | PJ Seeker to the Rescue!: A Lift-the-Flap Adventure | Operation Easter Egg | Super coloriage Pyjamasques | Gluglu marche sur la lune | Yoyo et la nuit du chat | Les Pyjamasques et Tatouro'Tom | Les Pyjamasques et la chasse aux papinuits | En avant la musique! | Roméo apprend à voler |
Activity Books
| PJ Masks Fun Book | PJ Masks To the Rescue! Colouring Book | Moonlight Hero Math with PJ Masks | PJ Masks: Giant Colouring Pad | PJ Masks Sticker Scenes | PJ Masks Go For It! Colour By Number | PJ Masks Paint with Water | PJ Masks: Spot the Difference | PJ Masks: Dot to Dot Heroes | PJ Masks: Time To Be A Hero (painting and coloring book) | PJ Masks Activity Pack | PJ Masks All Shout Hooray! Deluxe Colouring Book | PJ Masks Sticker Book | PJ Masks Super Sticker Book | Yoyo-Rapido Coloriages & Jeux | PJ Masks: 1001 Super Stickers | PJ Masks: Save the Day | Les véhicules | Les chiffres | Les couleurs | Les formes |
| Pyjamasques N° 1 (Automne 2017) | Pyjamasques N° 2 (Janvier-février-mars 2018) | Pyjamasques N° 8 (Juillet-août-septembre 2019) | Pyjamasques N° 1 (Juillet-août-septembre 2019) |
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