Born and raised in the Chicagoland area, Percival grew up on a fairly consistent diet of superhero comics, action movies, video games, and TV shows. At the age of ten, he first began writing and has never really stopped.

He’s been working in publishing since 2005 in various capacities—author, editor, formatter, letterer—and has written books, short stories, comics, and more. He currently lives in Japan’s Kagoshima prefecture, where he teaches college and university courses in English, literature, film, comparative mythology, and media studies.