My first attempt at creating a new monster for my home campaign. I've included statistics for using this beast in Swords & Wizardry, but it could easily be ported to Dungeons & Dragons or any other fantasy RPG.
Presenting the Phlegethon, a half minotaur/half gorgon monster.
Phlegethons are an unholy union of a Minotaur and a Gorgon. First created by Baphomet, they were seen as a failure in eyes of the demonic lord of Minotaurs due to their supremely lawful nature. He cast them out of his realm and forbid any of his children to associate with them. The Phlegethons eventually found a new home in overseeing the centuars who guard the boiling hot river of blood known as the Flegetonte as it flows through the Abyss and Avernus, the first layer of the Nine Hells. The Phlegethons and their centaurs keep the tormented souls submersed in the boiling hot blood as punishment for the evil deeds they committed in life. Phlegethons are often summoned by powerful wizards to use as guardians, as their bellicose nature is only offset by their strict adherence to law & order. The boiling hot blood from the river Flegetonte courses throughout the body of each Phlegethon. They frequently spew forth the blood during battle, as the vile liquid bursts into white hot flames when exposed to air of the Prime Material plane.
AC: 2 (18)
Attacks: Head Butt (2d4), 1 Kick (1d6), 1 Weapon (1d8), Breath weapon (Flaming Blood - 2d8)
Feel free to use this monster in your own games or campaign, but not to republish without permission.