Final answer:
Ban Ki-moon met Psy in 2012 and joked about being the most famous Korean before Psy's rise to fame. Kim Jong-Un is recognized as a dictator for his authoritarian rule in North Korea.
Step-by-step explanation:
The individual who met the singer Psy in 2012 and commented on his own fame in comparison is Ban Ki-moon. At the time, Ban Ki-moon was serving as the Secretary-General of the United Nations, a prominent position that made him one of the most well-known Korean figures internationally. However, with the explosive popularity of Psy's song Gangnam Style, Psy rapidly became a worldwide sensation, leading to Ban Ki-moon's playful remark about the shift in who was the most famous Korean globally.
In regards to the question about dictatorship, Kim Jong-Un is generally considered to be a dictator. He has held the position of Supreme Leader of North Korea since December 2011 following his father's death. Kim Jong-Un's regime is known for its authoritarian control over the country, lack of political freedom, and human rights violations.