What about pink elephants? Pink exists, and so do elephants. “Pink elephants” is just a bizarre combination of two elements that already exist. What about the weird creatures on other planets shown in science [1] fiction films such as Star Wars and Avatar? They are nothing new, but simply outrageous caricatures of creatures on Earth.
Links:
[1] https://www.thebereancall.org/taxonomy/term/58/science