Shadow King was an American hard rock supergroup. It was formed in 1990, by former Foreigner lead singer Lou Gramm, Dio and Def Leppard guitarist Vivian Campbell, drummer Kevin Valentine of Donnie Iris and the Cruisers, and bass player Bruce Turgon who later joined Foreigner with Gramm after the split of Shadow King. Vivian Campbell and Bruce Turgon both also played with Lou Gramm as a solo artist previous to Shadow King, with Campbell playing on Long Hard Look, and... [more on Wikipedia]