César Julio Romero Jr. (February 15, 1907 – January 1, 1994) was an American actor. He was active in film, radio, and television for almost 60 years. His wide range of screen roles included Latin lovers, historical figures in costume dramas, characters in light domestic comedies, and the Joker on the live action Batman television series of the mid-1960s, which was included in TV Guides 2013 list of The 60 Nastiest Villains of All Time. He was the first actor to play the character. Wikipedia
Who is popular today?