The narrator is an unknown male voice that is heard in each episode. He is known for saying his signature introduction sequence:
An alternate version of his introduction sequence took place in the US dub of "Catboy vs. Robo-Cat", but not in the French dub at all:
- "Night in the city, and a brave hero is ready to face fiendish villains to stop them messing with your day."
- "Connor becomes: "Catboy!"
- "The PJ Mask!"
There is also a French version of his introduction sequence:
- "La nuit tombe sur la ville, et nos trois héros vont affronter de terribles méchants. Ils sont prêts à tout pour les empêcher de nuire."
- "Sacha devient...: 'Yoyo'!"
- "Amaya devient... 'Bibou'!"
- "Greg devient... 'Gluglu'!"
- "Les Pyjamasques!"
The narrator has never been physically shown in the series.
- His catchphrases have been altered and said with a different tone in some episodes.