Ar'all was a Taelon who for a time served as the Australian Companion on Earth.

When Da'an contacted his fellow Taelons in order to tell them of William Boone's unique request to learn his peoples language, their response was that Ar'all had implanted one of the native people in Australia with the ability to speak the Companion tongue. It was known that the aborigine wanted to record the history of the Taelon's time on Earth in their own language. However, the individual was not able to master Taelon. (Episode: The Scarecrow Returns)