Revelation 12:3-4
And another sign was seen in the heaven; and, behold, a great red dragon, having seven heads and ten horns, and upon his heads seven diadems.
Revelation 12:16-17
And the earth helped the woman; and the earth opened her mouth, and drank down the river which the dragon cast out of his mouth.
Revelation 13:2
And the beast which I saw was like a leopard, and his feet as 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 worshiped the dragon, because he gave his authority to the beast; and they worshiped the beast, saying, "Who is like the beast, and who is able to make war with him?"
Revelation 13:11
And I saw another beast coming up out of the earth; and he had two horns like a lamb, and he was speaking as a 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 the dragon, the old serpent, which is the Devil and Satan, and bound him for a thousand years,