Sensei

Sensei, meaning teacher, was an ancient term originating on Old Earth, specifically from the nation of Japan.

It was used by many cultures in the known universe, including the Ginaz mercenaries before and during the Butlerian Jihad. On Ginaz, the term was used to describe a formidable and seasoned warrior, who passed on his skills to students.

One of the most famous of the Ginaz instructors was Chirok, a captured and reprogrammed thinking machine, who was known as a Sensei Mek.