- Off-the-Shelf FX: The trash can Marinette raids for disguise material appears to be the same one used in Princess Fragrance, with nearly identical surroundings and contents. Both raids yield a red motorcycle helmet for a disguise.
- Out of Order: Out of the three new Miraculous holders seen in this episode, only Kim/King Monkey was meant to make his debut here. Cat Noir's reaction to Luka/Viperion and Max/Pegasus implies that they were meant to debut in earlier episodes (Desperada and Startrain, retrospectively) , but ended up debuting here because "Party Crasher" aired before those episodes.
- Word of God: Astruc confirmed on his twitter that the Monkey is a chaotic Miraculous whose special power is a soft mix between Lucky Charm and Cataclysm.
Trivia / Miraculous Ladybug S 03 E 20 Party Crasher