Who is Ooota from Mutant Message Down Under and what is their importance?

Ooota is the first of several important Aborigine individuals encountered by the author on her walkabout - he picks her up from her hotel, takes her out into the desert, and acts as her interpreter throughout her journey. He is her guide, and while in some ways he is her guardian and defender, he is also an adversary - he argues strenuously, at times, that she is not ready to learn what the Aborigines have to offer. While the narrative never makes the point explicitly, there is the sense that Ooota's frequent and ongoing contact with the Mutant world is what has made him so suspicious. He is the liaison between that world and that of the Real People, and as a result has seen the damage that can be done by too much unguarded contact between the two.