Kim Il-sung (15 April 1912 – 8 July 1994) was the leader of the Democratic People's Republic of Korea, commonly referred to as "North Korea", from its establishment in 1948 until his death in 1994. He held the posts of Prime Minister from 1948 to 1972 and President from 1972 to his death. He was also the leader of the Workers' Party of Korea from 1949 to 1994 (titled as chairman from 1949 to 1966 and as general secretary after 1966).

His tenure as leader of North Korea has often been described as autocratic, and he established an all-pervasive cult of personality. From the mid-1960s, he promoted his self-developed Juche variant of communist national organization, which later replaced Marxism-Leninism as the ideology of the state in 1972. In the Library of Congress Country Study on North Korea in 2009, he was described as "one of the most intriguing figures of the twentieth century". He outlived Joseph Stalin by four decades, Mao Zedong by two, and remained in power during the terms of office of six South Korean presidents, 7 Soviet leaders, ten U.S. presidents, and twenty-one Japanese prime ministers.

Kim Jong-il (born Yuri Irsenovich Kim; 16 February 1941; official biography claims 1942 – 17 December 2011) was the supreme leader of North Korea (DPRK) from 1994 to 2011. He succeeded his father and founder of the DPRK Kim Il-sung following the elder Kim's death in 1994. Kim Jong-il was the General Secretary of the Workers' Party of Korea, Chairman of the National Defence Commission of North Korea, and the supreme commander of the Korean People's Army, the fourth-largest standing army in the world.

In April 2009, North Korea's constitution was amended to refer to him as the "supreme leader". He was also referred to as the "Dear Leader", "our Father", and "the General", among others. His son Kim Jong-un was promoted to a senior position in the ruling Workers' Party and is his successor. In 2010, he was ranked 31st in Forbes Magazine's List of The World's Most Powerful People. The North Korean government announced his death on 19 December 2011.

Following his demise, he was succeeded by his third son Kim Jong-un. He was proclaimed the Eternal General Secretary of the Workers' Party of Korea and Eternal Chairman of the National Defence Commission in 2012. His birthday is a public holiday in the country.

Mao Zedong, also transliterated as Mao Tse-tung  listen (help·info), and commonly referred to as Chairman Mao (December 26, 1893 – September 9, 1976), was a Chinese Communist revolutionary, guerrilla warfare strategist, Marxist political philosopher, and leader of the Chinese Revolution. He was the architect and founding father of the People's Republic of China (PRC) from its establishment in 1949, and held authoritarian control over the nation until his death in 1976. His theoretical contribution to Marxism–Leninism, along with his military strategies and brand of policies, are collectively known as Maoism.

Mao rose to power by commanding the Long March, forming a Second United Front with Kuomintang (KMT) during the Second Sino-Japanese War to repel a Japanese invasion, and leading the Communist Party of China (CPC) to victory against Generalissimo Chiang Kai-shek's Kuomintang (KMT) in the Chinese Civil War. After solidifying the reunification of China through his Campaign to Suppress Counterrevolutionaries, Mao enacted sweeping land reform, by using violence and terror to overthrow the feudal landlords before seizing their large estates and dividing the land into people's communes. During the years when Mao was China’s 'Great Helmsman', a range of positive changes came to China. These included promoting the status of women, improving popular literacy, doubling the school population, providing universal housing, abolishing unemployment and inflation, increasing health care access, and dramatically raising life expectancy. In addition, China's population almost doubled during the period of Mao's leadership (from around 550 to over 900 million). As a result, Mao is still officially held in high regard by many in China as a great political strategist, military mastermind, and savior of the nation. Maoists further promote his role as a theorist, statesman, poet, and visionary, while anti-revisionists continue to defend most of his policies.