Trivia: The filmmakers had originally planned to shoot the film at Banff National Park, but the direction of the park did not like the fact that one of the bad guys was an Indigenous gang boss, and therefore the filming permit was revoked.
Trivia: Peyton List voices Poison Ivy. In the TV show "Gotham", List plays Ivy Peppers, who becomes Poison Ivy.
Trivia: The Man as Panda had difficulty breathing after he got outside. He gasped for a while, then started to breathe through his mouth and was OK. The significance of this "cat turns into man" scene is that cats are "obligate nasal breathers" (automatically breathe through their nose) whereas humans can choose their nose or mouth. Cats can also breathe through their mouth, but it is a sign that something is wrong (overexertion, difficulty breathing, or other medical problem) = Get Cat to a Vet.
Trivia: The cuckoo bird was used at the beginning of the movie to point out what a parasitic bird does - secretly lays eggs in the nest of another bird species and leaves them for the different species to raise as their own. Another "brood parasite" that many people might be more familiar with is the Brown-headed cowbird. If all goes as intended, the different species, such as a Cardinal, will take care of the eggs until they hatch and continue feeding fledgings. Sometimes, "alien" eggs are evicted.