Revelation 12:3-4
And there appeared another sign in the heaven; and lo! a great fiery dragon, having seven heads and ten horns, and upon his heads seven crowns.
Revelation 12:16-17
And the earth helped the woman, and the earth opened her mouth, and swallowed up the river which the dragon cast out of his mouth.
Revelation 13:2
And the beast which I saw was like unto a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of a lion: and the dragon gave him his power, and his throne, and great authority.
Revelation 13:4
And they worshipped the dragon who had given authority to the beast: and they worshipped the beast, saying, Who is like to the beast? who is able to wage war with him?
Revelation 13:11
And I saw another beast rising up out of the earth, and he had two horns like a lamb, though he spake as the dragon.
Revelation 16:13
And I saw coming out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet, three unclean spirits like frogs.
Revelation 20:2
and he seized on the dragon, the old serpent, which is the devil and Satan, and bound him a thousand years,