John the Apostle
Revelation 13:2BSB·traditional attribution

The beast I saw was like a leopard, with the feet of a bear and the mouth of a lion. And the dragon gave the beast his power and his throne and great authority.

Matthew Henry Presbyterian @wholebiblehenry

We have here an account of the rise, figure, and progress of the first beast; and observe, 1. From what situation the apostle saw this monster. He seemed to himself to stand upon the sea-shore, though it is probable he was still in a rapture; but he took himself to be in the island Patmos, but whether in the body or out of the body he could not tell. 2.

Commenting on Revelation 13:1-10

John Gill Reformed Baptist @doctorgill

And the beast which I saw was like unto a leopard,.... To which the Grecian kingdom is compared in Dan 7:6; because of that rapidity and swiftness with which Alexander overran the world, and set up this monarchy; and to which the Roman Papal monarchy bears some resemblance; for as the Grecian monarchy was divided into several parts, which the leopard's spots may also point...

Albert Barnes Presbyterian @notesbybarnes

Verse 2. And the beast which I saw was like unto a leopard. For a description of the leopard, . It is distinguished for bloodthirstiness and cruelty, and thus becomes all emblem of a fierce, tyrannical power. In its general character it resembles a lion, and the lion and the leopard are often referred to together.