Legato Eustace has long been dedicated to their studies in Philosophy but has always held an interest in the Universal Primate Captivity Crisis and has now become committed to a missionary in the Doctors' liberation efforts. Having been raised up in the Pioneer caste of Apskellion Space Apes, Legato retired from the galactic frontier to perform good deeds with the Doctors and joined the expedition to free the primates of Earth. Now, as their mission leads them to Earth, Legato and the Doctors will attempt to put their skills and education to work as best they can for the sake of the primates there.