Antibug may be based on Reverse Flash.
Some of the drawings in the bathroom include Chloé with a mustache, Chloé as an elephant, and Chloé as a rat.
Big Mustachio is known as "Super Mustache" in French.
Cat Noir handing Ladybug a flower is reminiscent to a scene in the Ladybug PV (2012) where Cat Noir gives Ladybug a rose.
When Ladybug rips open Vanisher's purse, one of the contents that spilled out was a ticket for Jagged Stone's concert, previously seen before in Pixelator (2016).