Revelation 12:3-4
And there appeared another wonder in heaven, it was a great red dragon, having seven heads, and ten horns, and seven crowns upon his heads.
Revelation 12:16-17
but the earth helped the woman, for the earth opened its jaws, and swallowed up the flood which the dragon threw out of his throat,
Revelation 13:2
and the beast which I saw was like a leopard, 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
They worshipped the dragon which had given his power to the beast: and they worshipped the beast, saying, "who is like unto the beast? who is able to make war with him?"
Revelation 13:11
Then I beheld another beast coming out of the earth, it had two horns like a lamb, but it spake like a dragon.
Revelation 16:13
and I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet.
Revelation 20:2
and he laid hold on the dragon, that old serpent, which is the devil and satan, and bound him for a thousand years,