His tribe has inferior technology and Princess Myciena von Maidenport describes your units to be highly superior to his native warriors. If you went to war with him and his tribe, after you conquer Okahe, the remnants of the tribe continuously raid your settlers and you are forced to put them down by force. If you negotiated with his tribe, he will aid you with diamonds in A Friendly Visit and Horsemen in Supporting Duck. In A City from Scratch, he requests your aid in building a modern city for his people from scratch.
He is based off the Native American leader Sitting Bull. Ironically, his name is also an idiom that describes a helpless person. Sitting Duck is also the title of a lithograph, a book and a TV series.