After an extended absence, Draxtherion Hawkwind, one of the original NIMH rats, has found his way to Thorn Valley. He up and vanished somewhat unexpectedly from the Rosebush Colony shortly before where the book/film opens. Discussing the idea with Tim, it would better integrate the book and film if Drax were the one who left (in the book), being mistaken by some for Jenner due to his physical similarities.