Getty Images John Branca grew up idolizing the King of Rock ‘n’ Roll, Elvis Presley . By the 1980s, he was the top confidante for another member of music royalty: pop king Michael Jackson . The presence behind some of the singer’s most notable career moments, including the explosion of the “Thriller” music video on MTV, Branca is a key figure in the new biopic Michael about Jackson’s life and career. Michael’s nephew Jaafar Jackson plays the titular singer, while Miles Teller portrays Branca at the height of their partnership. Branca not only helped propel Jackson to global superstardom, but has managed his musical legacy as a co-executor of the singer’s estate. Here’s what we know about his partnership with Jackson, his life today, and involvement in the movie. Who Is John Branca? From birth, Branca, born December 11, 1950, in Bronxville, New York, had an intimate connection to the entertainment industry.…