"Big Sister Motsuki"
Season 3, episode 25A
(Overall episode #148)

Big Sister Motsuki title card


Premiere date
USA United States of America
February 7, 2020
Written by Simon Nicholson
Directed by Christian De Vita
Viewer count (millions) TBA
Episode Guide
"Gekko Takes Charge"
"PJ Party Crasher"

"Big Sister Motsuki" (also known as "Motsuki grande soeur" in French) is the first segment of the 25th Season 3 episode of PJ Masks.


Motsuki steals Romeo's Baby Beam and turns him, Luna Girl and (with the help of Baby Luna) the PJ Masks into bad-behaved babies.


The following characters appeared in the episode "Big Sister Motsuki":


This episode article is in need of a synopsis. A synopsis is intended to be a very detailed description of what occurs in the episode.


  • Teach others how to be nice instead of teaching them how to be bad.


  • Despite what the summary says, it was Baby Luna who turned the PJ Masks into babies, not Motsuki, though it is surprising for a baby to be old enough to handle technology.
    • It is implied that Motsuki gave Baby Luna the Baby Beam and taught her how to hold and use it off screen so that she (Baby Luna) will turn the PJs into babies.
  • This episode, along with "PJ Sky Pirates", is one of the post-"The Prank Wheelz" episodes to have Romeo's Lab.
    • In this case, however, it may be possible that this episode took place before the events of "Villain of the Sky".
  • Romeo's Baby Beam makes a returning appearance in this episode. This time, it is designed as a handheld gun.
    • It was first introduced in "Terrible Two-Some".
    • This marks the second time Catboy and Owlette get zapped by the invention, the first time being in the aforementioned episode.
    • This also marks the first time Luna Girl, Romeo, and Gekko get zapped by the invention.
    • Also in some scenes, Luna Girl (as a baby) can be heard imitating Motsuki's moth squeaks.
  • Kitten Boy and Chicklette return in this episode.
  • Romeo and Robot meet Motsuki for the first time.
  • This is the second time Motsuki narrates a title of an episode.
  • This is the sixth appearance of the PJ Seeker.
  • This is the thirty-sixth episode to start during nighttime.
  • Luna Girl gets zapped by one of Romeo's inventions for the first time.
  • This is the fourth time Catboy and Owlette get taken over by Romeo's inventions.
    • The first was in "Terrible Two-some."
    • The second was in "Gekko and the Opposite Ray."
    • The third was in "Romeo's Melody."
  • In the classroom, we see Romeo’s terrible drawing of him getting superpowers, which is from "Wolfy Powers."
  • While Luna Girl and Romeo giggled after being zapped by the Baby Beam, the PJ Masks only cried like babies after the former zapped them with it. As a result, babies Romeo and Luna ended up calming the PJ Babies down.
    • However, by the end of the episode, the PJs rarely remembered anything after being zapped; they think PJ Robot only prevented Motsuki from turning the PJs into villains and that he saved the day by himself, despite him showing Motsuki how to make the babies nice. Therefore, the team's signature chant was given slight alterations to: "PJ Masks, all shout hooray! 'Cause in the night, PJ Robot saved the day!"
  • Starting with this episode, Luna's eye color is now more of a purplish-blue than regular blue.
  • Luna Girl (as Baby Luna) uses one of Romeo's inventions for the second time.
  • PJ Robot is called "PJ Bot-Bot" for the first time.
    • Robot was also called simply "Bot-Bot" for the first time.
  • This is the seventh time Romeo gets zapped by his own inventions.
  • This is the last episode to feature Owlette doing her original animation on activating the "Owl Wing Wind" power to have her flapping the owl wings before the producers decided to change the animation to have her fold and release her wings at the last minute before the production of Season 3 ended.
Episode list
| Blame it on the Train, Owlette | Catboy's Cloudy Crisis | Owlette and the Flash Flip Trip | Catboy and the Pogo Dozer | Gekko and the Super Ninjalinos | Owlette's Terrible Pterodactyl Trouble | Catboy and the Shrinker | Owlette and the Moon-Ball | Catboy and the Butterfly Brigade | Owlette the Winner | Speak UP, Gekko! | Catboy and Master Fang's Sword | Catboy VS. Robo-Cat | Owlette and the Giving Owl | Catboy and the Great Birthday Cake Rescue | Gekko and the Snore-A-Saurus | Looking After Gekko | Catboy and the Teeny Weeny Ninjalino | Catboy's Tricky Ticket | Gekko and the Missing Gekko-Mobile | Catboy's Flying Fiasco | Gekko's Stay-at-Home Sneezes | Gekko Saves Christmas | Gekko's Nice Ice Plan | Gekko and the Mighty Moon Problem | Clumsy Catboy | Catboy and Gekko's Robot Rampage | Owlette's Feathered Friend | Owlette and the Battling Headquarters | Gekko and the Mayhem at the Museum | Catboy Takes Control | Owlette's Two Wrongs | Gekko Floats | Catboy's Two-Wheeled Wonder | Catboy's Great Gig | Owlette's New Move | Supersonic Owlette | Catboy and the Sticky Splat Slingshot | Owlette of a Kind | Beat the Drum, Catboy | Catboy Squared | Gekko's Super Gekko Sense | Owlette and the Owletteenies | Gekko's Blame Campaign | Owlette and the Moonflower | Slowpoke Gekko | Catboy and the Lunar Dome | Gekko and the Rock of All Power | Super-Sized Gekko | Take to the Skies, Owlette | Slow Down, Catboy | Gekko's Special Rock |
| Moonfizzle Balls | Soccer Ninjalinos | Lionel-Saurus | Catboy's Cuddly | Night of the Cat | Catboy Does It Again | Terrible Two-Some | Owlette's Luna Trouble | Ninja Moths | Who's Got the Owl Power? | PJ Pinball | Bounce-a-Tron | Wacky Floats | Romeo's Disguise | PJ Robot | PJ Power Up | Moonstruck: Race to the Moon | Moonstruck: Lunar Fortress | Robot's Pet Cat | Gekko, Master of the Deep | May the Best Power Win | Moonbreaker | Race Up Mystery Mountain | The Mountain Prisoner | The Wolfy Kids | Wolf-O-Saurus | Catboy No More | Gekko Vs. the Splatcano | Meet Armadylan | Invisible Owlette | Wolfy Mountain | Romeo's Crystal Clear Plan | Nobody's Sidekick | Armadylan Menace | Power Pondweed | Owlette Comes Clean | Halloween Tricksters | The Wolfies Take HQ | The Good Wolfy | The Wolfy Plan | The Lizard Theft | PJ Dylan | Armadylan'd and Dangerous | Romeo's Action Toys | The Dragon Gong | Flight of the Ninja | Romeocoaster | Gekko and the Opposite Ray | PJ Masks Vs. Bad Guys United | Easter Wolfies | Luna and the Wolfies |
| Moon Madness | Armadylan and Robette Rule | Armadylan Zen | Way of the Woofy | Werejalinos | PJ Comet | Glowy Moths | Teacher Goes Ninja | Robot Goes Wrong | Lionel's Powers | Best Friends Forever | Meet An Yu | The Moon Prix | Pirates Ahoy! | The Secret of the Pagoda | Storm of the Ninja | Arma-Leader | Owlette Slips Up | The Splat Monster | Moth on the Moon | Fly Me To The Moon | Luna's Cosmic Tantrum | Motsuki The Best | Wheels of a Hero | Moonwolfy | Clash on Mystery Mountain | A Teeny Weeny Problem | Take Romeo Off The Road | Mission: PJ Seeker | Wolfy Powers | Do The Gekko | Armadylan, Action Hero | Super Muscles Show Off | The Prank Wheelz | Where's The Wolf Wheelz? | Villain of the Sky | Protector of the Sky | The PJ Masks Save Christmas | Romeo's Melody | PJ Robot Takes Control | PJ Sky Pirates | The Disappearing Ninjas | Gekko Everywhere | Gekko Takes Charge | Big Sister Motsuki | PJ Party Crasher | Master of the Moat | PJ Robot Vs Romeo |
| Heroes of the Sky | Who Let the Moths In? | Commander Meow | Motsuki's Missing Sister | Not So Ninja |
To be announced.
| Super Cat Speed | Super Gekko Muscles | Owl Eyes | Reinvention | Moth's Day | Super Moves Dance Party | Super Gekko Camouflage | Teamwork | All Skills | Determination | Gekko Improvises | Super Singing Heroes | Team Night Ninja | Super Cat Ears | Owlette Improvises | A Job For All | Bravery | Catboy Improvises | Taking Turns | Training with the PJ Masks | Moon Rocked | Play Date on the Moon | Space Race | Cat-Car Chaos | Gekko-Mobile Mischief | Robot's Washed Up | Owl-Glider Gliding | Armadylan Style | Wolfy Garden | Bye Bye Bad Luna | Catboy Power Up | Owlette Power Up | Gekko Power Up | Masters of the Mountain | Moon Cuddly | PJ Rovers | PJ Racing | An Yu's Bird Rescue | PJ Masks Surprise | Ninjability | HQ Tour | Minding Motsuki | It's A PJ Masks Christmas | Learning the Planets |
| Pilot |
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