Vivian Patrick Campbell is a Northern Irish singer-songwriter and musician. He came to prominence in the early 1980s as a member of Dio, and has been a member of Def Leppard since 1992. Campbell has also worked with Thin Lizzy, Whitesnake, Sweet Savage, Trinity, Riverdogs, and Shadow King.
Philip Kenneth Collen is an English musician who is best known as the co-lead guitarist for the rock band Def Leppard, joining the band in 1982 during the recording of the Pyromania album. Prior to joining Def Leppard, Collen had performed with a number of bands in the burgeoning British glam metal scene. Outside of Def Leppard, with which he still records and performs live, he has been involved in a number of side projects most notably the trio Man Raze, with which he is the lead singer and sole guitarist.
Richard Savage is an English singer-songwriter and musician best known for being the bass guitarist and one of the founding members of the English rock band Def Leppard. Savage and lead singer Joe Elliott are the only two remaining original members of the band. The two of them, plus drummer Rick Allen, are also the only members of the band who have performed on every album.