Daniel "Danny" Zuko (born 1940) is one of the main characters in Grease. He is portrayed by Barry Bostwick in the original Broadway production, John Travolta in the 1978 film adaptation, and Aaron Tveit in 2016’s Grease Live. Danny is the leader of the Rydell High T-Birds whose world changes when he falls in love with Sandy Olsson one summer, and again, when she unexpectedly arrives at his school. During summer vacation at the beach, he meets and falls deeply in love with Sandy, a really...