Hussuloofians were a race of green creatures known for their kindness and gentle nature – as well as remarkably hairy ears. They had a strong attraction to the tripeberry – a large purple berry with a strong smell that was considered to be a delicacy on the planet.
For a while their King was a Trit in the guise of their former ruler. Under the Trit's reign, the rule box was greatly expanded and the subjects bullied into subservience. When the Trit was exposed by the Eleventh Doctor, the vacant position was taken on by the former King's aide, Trubbs. (COMIC: The King and the Tripeberry)