Your kid tore through Percy Jackson and needs the next series. These five picks have the same humor, adventure, and mythology-driven worldbuilding at a similar reading level. All are parent-approved.
Dragon tribes at war with political intrigue and rotating narrators. 15 books across three arcs. Huge with ages 8-12.
A girl discovers she is an elf from a hidden civilization. Deep worldbuilding, political conspiracy, and 600+ page later books.
A boy discovers he is a wizard. Same chosen-one structure, different mythology. The series grows darker, which Percy Jackson does not.
Twins fall into a book of fairy tales and discover the characters are real. Lighter tone than Percy, more imagination.
Two kids discover their grandparents' estate is a preserve for mythical creatures. Strong adventure plotting with genuinely scary moments.