Z is for zero focalisation. You didn't believe I would find a topic beginning with Z, did you? But I have written a lot on narrative perspective, and zero focalisation is one of the most common narrative devices in children's literature. It is not quite the same as omniscient narration, because focalisation is about seeing rather than speaking. Zero focalisation is a view from nowhere, a vantage point taken by an anonymous agency, and you almost feel guilty spying on somebody's life. Zero focalisation is not a tremendously exiting device because how can you engage with characters if you never share their point of view? It's like watching fish in a fish tank. In practice, it is most often shifting multiple focalisation, when the point of view moves from character to character, sometimes going inside their minds, sometime staying outside.
Z is also for zigzag temporality, when the narrative moves back and forth between two or more moments in story time.
Z is also for zoomorphism, which is a common device in children's literature when humans appear in animal disguise. It is the opposite of anthropomorphism, in which animals are endowed with human traits. You may think it is the same, but it isn't. However, we have now come to the end of the alphabet, and you may need a break.