Z is a planet in the shape of the letter Z and is the home to every other letter that existed. Z saw what happened to F, and cried after watching his descent into madness, showcasing their apparent compassion for the rest of the letters. In Now I Know My ABCs, they used his “...” gems to reverse time and undo the events of the old timeline. In ‌nZ…, they are seen very cheerful after the letters ended up with a better ending, as well as being lowercase.