Related: Harry Potter
A popular book series in the 90's and early 00's. Uh, it had cyan space centaurs, some crappy meal toys... Notably, a "girl" character (notice how they're all gangly, tall, lanky rectangles in media) turned into a male lion in the books, on a regular basis. Some excuse about how the Furry Transformers "absorb DNA" and since MTF kid "absorbed the DNA of a male lion", "she" turns into a male lion. Suuuure.
Also there are nasty critter things that are like P-zombies, but in a fantasy novel, and there's some gnarly scene where some space hawk rips an evil alien's eyes out. Metal.