A Judo Instructor, also known as a Sensei, is a highly trained martial arts expert who is responsible for teaching the art of Judo. They are knowledgeable in the techniques and principles of the sport, and are able to provide guidance and instruction to students. Senseis must have a deep understanding of the sport and be able to demonstrate proper technique and form. They must also be able to motivate and inspire their students to reach their full potential.