Season 4 moves beyond the core trio of Catboy, Owlette, and Gekko by introducing , a space-loving boy who becomes a hero after an asteroid incident.
: A new octopus-girl villain who lives in a moat and is obsessed with her crystal collection. She frequently clashes with Gekko and the team using her aquatic powers. PJ Masks Season 4 Complete Pack
: A mischievous monkey-like character who brings chaos to both Mystery Mountain and the city. Season 4 moves beyond the core trio of
In the world of night-time heroism, marks a massive expansion of the universe, introducing new heroes, deep-sea exploration, and cosmic adventures. New Heroes and Alliances : A mischievous monkey-like character who brings chaos
The team faces fresh threats from the deep and the ancient past:
: A scientist-hero who aids the PJ Masks during space missions, though he sometimes struggles with the physical side of hero work.
: The dragon girl of Mystery Mountain continues to play a vital role, often guiding the team through magical challenges.