Revelation 12:3-4
And another sign was seen in heaven; and lo, a great red dragon, with seven heads and ten horns, and upon his head seven diadems.
Revelation 12:16-17
But the earth came to the rescue of the woman and the earth opened her mouth and swallowed up the river that the dragon had poured forth from his mouth.
Revelation 13:2
The beast I saw was like a leopard, and his feet were bear's feet, and his mouth a lion's mouth. The dragon gave him his power and his throne and great authority.
Revelation 13:4
Men worshiped the dragon because he gave his authority to the beast; and they worshiped the beast, saying. "Who is like the beast? Who can fight with him?"
Revelation 13:11
And I saw another beast ascending from the land; and he had two horns like a lamb, but he spoke like a dragon;
Revelation 16:13
And I saw three unclean spirits, like frogs, coming out of the dragon's mouth, and the beast's mouth, and the false prophet's mouth.
Revelation 20:2
He gripped the dragon, that old serpent, who is the devil and Satan, and bound him for a thousand years,