The main two fancasts for the lead male role (Liam Stewart) were Lucas Till and Collin Ford.
Jennifer Yuh Nelson's 2nd live-action movie, but the 1st to be directed by her. She has done work for mostly animated movies, notably the Kung Fu Panda franchise. She first did work on a live-action movie for the art department.
Catherine Dyer and Peyton Wich have both appeared in Stranger Things as Agent Connie Frazier and Troy, respectively.
Alexandra Bracken, author of The Darkest Minds series, makes a cameo appearance as a nurse at the end of the movie.