Kubanochoerus, an imposing prehistoric mammal from the Miocene, was known for its appearance with a single, bony, conical horn in the middle of its forehead, resembling a unicorn. It could reach about 2.8 meters in length, 1.4 meters in height at the shoulder, and weighed approximately 500 kg. It inhabited the open forests and savannas of Eurasia and Africa.
There is almost no art of it online, as it is not a well-known or iconic mammal, so I had to hand-draw some of the images from the dataset. Personally, I liked the resulting model.