I just discovered today while reading the Apocalypse that the Beast and the False Prophet are two different people rather than two different names for the same man. I was unsure about this until today.
The Beast
"Here is wisdom. He that hath understanding, let him count the number of the beast. For it is the number of a man: and the number of him is six hundred sixty-six." - Revelation 13:18
The Beast and the False Prophet
"And the beast was taken, and with him the false prophet, who wrought signs before him, wherewith he seduced them who received the character of the beast, and who adored his image. These two were cast alive into the pool of fire, burning with brimstone." - Revelation 19:20
The Beast
"Here is wisdom. He that hath understanding, let him count the number of the beast. For it is the number of a man: and the number of him is six hundred sixty-six." - Revelation 13:18
The Beast and the False Prophet
"And the beast was taken, and with him the false prophet, who wrought signs before him, wherewith he seduced them who received the character of the beast, and who adored his image. These two were cast alive into the pool of fire, burning with brimstone." - Revelation 19:20