Short answers, pulled from the story.
Barry Sonnenfeld directed Men in Black 3 after receiving the initial premise from Will Smith during filming of the second movie in 2002. Sony Pictures Entertainment president Rory Bruer officially announced the film on the 1st of April 2009.
Principal photography started on the 16th of November 2010 despite an unfinished script. The production took place primarily in New York City with a budget of $215 million across two blocks between late 2010 and mid-2011.
Josh Brolin portrayed the younger version of Agent K set in 1969 while Tommy Lee Jones played the present-day counterpart. Jemaine Clement appeared as Boris the Animal, an alien criminal who escaped from a moon prison.
Men in Black 3 grossed $654.2 million worldwide during its theatrical run with a worldwide opening weekend of $189.9 million. It earned $179 million in the United States and Canada alone to become the tenth highest-grossing film of 2012 globally.
Danny Elfman composed the original score for Men in Black 3 after scoring the previous two installments. The soundtrack album was released on the 29th of May 2012 four days after the film premiered.