Who are the four horsemen of the apocalypse?

Actually the pale horse is really the green horse - the Greek was chloros. Some people have noted these 4 colors (white, red, black, green) are the Pan-Arab flag colors.

Four guys in Revelation who come down and slaughter a third of the human race.

They're fictional characters in the book of Revelation: white (conqueror), fiery red (war), black (famine), pale (death). If this sound interesting to you, the Nine Nazgul of LOTR have far more literary value.

I thought it was N Sync, but there's 5 of those guys. So one has got to be just a back up singer.

Well, can you at lease tell who is the first horsemen?

Brian, George, Darryl & Keith.

d'Artagnan, Athos, Porthos, Aramis

Jeb, Scott, Alddrin, and Bill Kerman.

The books of Revelation is fiction and has nothing to do with reality.

BP, Shell, Chevron and ExxonMobil