Marsal bin Maun was the second Menteri Besar, who served from 1961 to 1962. It was during his tenure as Menteri Besar that the Brunei Revolt broke out. He was one of the person responsible for the establishment of the Federation of Brunei Malay Teachers (PGGMB) and Brunei Scout Movement, which both still run till today. He was a prominent member of the Brunei Malay Teachers' Union, close to Sultan Omar Ali Safuddien III, and the first of the "three M's" that the British government dreaded.

The prime minister of Brunei is the head of government of Brunei. Concurrently, the title is held by the sultan of Brunei, who as sultan is also the head of state of the country. As the prime minister, the Sultan and Yang Di-Pertuan is the head of both the ministerial cabinet and the Legislative Council of Brunei.