The Beast may refer to one of three beasts described in the Book of Revelation.
Satan (the dragon; on the left) gives to the beast of the sea (on the right) power represented by a sceptre in a detail of panel III.40 of the medieval French Apocalypse Tapestry, produced between 1377 and 1382.
The Revelation of St John: 12. The Sea Monster and the Beast with the Lamb's Horn. A woodcut by Albrecht Dürer
A coin bearing the Greek name and image of Nero, with radiant crown symbolizing the sun
The Book of Revelation or Book of the Apocalypse is the final book of the New Testament. Written in Koine Greek, its title is derived from the first word of the text: apokalypsis, meaning 'unveiling' or 'revelation'. The Book of Revelation is the only apocalyptic book in the New Testament canon. It occupies a central place in Christian eschatology.
Very rare depiction of scenes from Revelation in an altar. Here in Kolby Church, Denmark, 1550.
St. John the Evangelist on Patmos by Hieronymous Bosch, c. 1489
St. John receives his Revelation, Saint-Sever Beatus, 11th century