Who was Sammy Gravano?

Answer by  skuzztard (35)

Sammy "The Bull" Gravano was a mafia under-boss who knew no bounds for his devious and murderous schemes under mob boss John Gotti. This "made" guy eventually turned "rat" or informant for the F.B.I. and was instrumental for bringing down John Gotti.

Answer by  cb31 (226)

Sammy Gravano was an underboss in the Gambino crime family. He was also known as Sammy 'The Bull'. He is best known for testifying against John Gotti in the trial that would put him in jail for the rest of his life. He turned on John Gotti in exchange for his freedom.