Answer:
In the book, Fools Crow is portrayed as a young and inexperienced member of the Pikuni tribe who becomes a great healer and spiritual leader through his experiences and interactions with other members of his community.
While the book does not specifically mention who the Pikuni's greatest warrior is, it does provide some insight into the values and beliefs of the tribe. The Pikuni people highly value courage, bravery, and skill in warfare, and they often honor their most successful warriors through stories, songs, and other forms of recognition.
Given this information, it is possible that the greatest warrior among the Pikuni people would have been someone who displayed exceptional bravery and skill in battle, and who was highly respected and admired by other members of the tribe. However, without more specific information or context, it is difficult to determine who that individual might have been.