- He has a large interest in Master Fang, and occasionally pretends to be him during missions. For example, he does this in "Catboy and Gekko's Robot Rampage."
- He has a fear of water and getting wet; it was mentioned in "Catboy's Cloudy Crisis," "Owlette the Winner," "The Good Wolfy," "Pirates Ahoy!," "Motsuki The Best," "Gekko Takes Charge," and the shorts "Bravery" and "Catboy Power Up."
- Despite this fear, in "Octobella," both he and Owlette were seen underwater for the first time.
- However, Catboy kept complaining that he doesn't like water.
- He sometimes treats Gekko like a little brother as shown in "Looking After Gekko."
- He sometimes narrates his actions.
- In "Owlette of a Kind," he temporarily gained Owlette's powers due to Romeo's Power Copier.
- His suit is currently the only one with ears in his team.
- His signature color is blue.
- He has occasionally used his Super Cat Ears ability in the Owl-Glider and the Gekko-Mobile, but he has mostly used it in the Cat-Car and outside from the vehicle.
- In the episode "Gekko's Super Gekko Sense," it is revealed that he is talented at drawing. It is mentioned again in the episode "Owlette and the Owletteenies."
- He almost lost his friendship with Owlette in "Owlette's Terrible Pterodactyl Trouble" as she repeatedly did not forgive him, but luckily, she learned her lesson and they got back together.
- In the episodes "Catboy's Great Gig," "Beat the Drum, Catboy" and "Super Cat Ears," it is revealed that he is good at playing instruments, like the flute, the drum, and the trumpet.
- In "Who's Got the Owl Power?," it is shown that he knows about origami and knows how to fold paper into fancy origami paper figures, such as a dragon.
- In "Catboy's Cuddly" and "Moon Cuddly," he has a cuddly cat named Mr. Meow.
- Catboy used Super Cat Stripes for the first time in "Wacky Floats."
- Catboy's Super Cat Stripes were inspired from Spider Man's main ability to fire webs.
- Catboy is turned into Night Panther, a villain cat with a black suit and white stripes in "Gekko and the Opposite Ray."
- Catboy is based on the original book series character, Yoyo.
- He is also named after his book counterpart in the French version of the television series.
- Also, his daytime name Connor is named Sacha, which is the same name as his book counterpart's daytime identity.
- He is the tallest PJ Mask member.
- Catboy's physical appearance is a combination of Yoyo's original book design, and designs of Flash from The Flash series by DC Comics.
- Despite the television series mainly taking inspiration from Marvel Comics, he stands as one of the few characters whose character design was inspired by a character that is not related to Marvel Comics.
- Catboy has a bad habit of spending too much time doing his hair in the morning as revealed in "Robo-Wolf."
- He is the only PJ Masks member who has his voice changed in the French dub.
- In "An Yu's Birthday," this was the first time he was not shown in the daytime.
- Kai Harris, his current voice actor, is Ryder's voice from Paw Patrol since Season 8.
- In "Heroes Everywhere," when the heroes respective colored beams head into space to form the headquarters, he could be seen coming from central Florida in the United States, meaning the city is located somewhere in the southeast region of that country.
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