: A mischievous monkey-like character who brings chaos to both Mystery Mountain and the city.
: An ancient Egyptian boy who uses his "Pharaoh Feathers" and boomerangs to cause trouble. PJ Masks Season 4 Complete Pack
: To combat these threats, the team debuts the PJ Jet for sky missions and the PJ Sub for underwater battles in the newly introduced Crystal Garden . : A mischievous monkey-like character who brings chaos
: A scientist-hero who aids the PJ Masks during space missions, though he sometimes struggles with the physical side of hero work. : A scientist-hero who aids the PJ Masks
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
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.