In which movie does John Travolta play the character Danny Zuko?

John Travolta played the character Danny Zuko in the 1978 musical romantic comedy film "Grease". Travolta’s portrayal of Danny Zuko had him wearing leather jackets, skintight jeans, and a slick quiff hairstyle which was an undercut: longer on top and shorter on the sides and back. His quiff in the movie was seen as the height of cool.

Danny Zuko is the slick guy who lives a double life as leader of the greaser gang (T-Birds) and as Sandy Olsson's boyfriend. Sandy is played by the English-Australian singer and actress Olivia Newton-John. She is someone who will become a greaser.

John Travolta and Olivia Newton-John are the on screen couple who in "Grease" have a summer fling. He is a greaser and she is a 'good' girl. This hit musical comedy chronicles the romantic entanglements of the entire group of high school seniors who are full of energy and often love to sing and dance.