Who was crazy horses worst enemy?

The worst enemy of Crazy Horse was an Oglala Sioux named No Water. He shot Crazy Horse in the jaw for stealing Black Buffalo Woman, No Water's wife. She later returned to No Water and Crazy Horse lost his title as a "shirt wearer" or war chief as a result of this incident.

No Water is the only person known to have seriously wounded Crazy Horse until he was later killed by other Lakotas.