Wally Tharah is a minor character from the Season 6 episode Mordecai and Rigby Down Under, he is an Aboriginal man from the Australian outback who stumbles upon the dehydrated and lost Mordecai and Rigby. He gives them some water and leads them back to the road so they can try and get back home.
Wally has a PhD in English from Cambridge and searches for investors from the United States for his invention the Nants (nude pants).