The secrets of the Andalite disc were revealed when the Animorphs finally recovered it - it carried a message from Elfangor to Tobias, explaining to him the nature of the disc and the choice it offered him. With the disc Tobias was able to restore his ability to morph. The disc also allowed him to acquire his original human DNA as a morph. Whether the disc has any connection to the Ellimist is never revealed. Later in the episode The Front, it reveals a living hologram that reveals to Tobias that his real father is Elfangor.