Armageddon was a supergroup of sorts, albeit very short-lived.
The band was formed by bassist Louis Cennamo of Renaissance/Illusion fame, Bobby Caldwell on drums, from Johnny Winter and Captain Beyond, Martin Pugh, guitar, from Steamhammer and Keith Relf from The Yardbirds and Renaissance on vocals and harp.
Their only album came out in 1975, and it's one of the better hard rock albums of the seventies. A buddy turned me on to them back in my life in the barracks USAF days.