An extremely powerful demon lord.
The dread Infernal Behemoth is the ultimate soldier in the Infernal army. He is a true demon, and Hellish forces have strengthened his frame into one geared towards one purpose: the annihilation of life. In this the Infernal Behemoth succeeds admirably.
The powers of the Infernal Behemoth are almost entirely geared towards combat - with Angelic forces specifically but the Behemoth isn't picky about his targets. However, while their innate attacks and armor are formidable, perhaps the reason they are most feared for is their Bloodlust ability.
When someone has descended to become an Infernal Behemoth the message "[name] has pleased the Dark Lord Tlacolotl with his capacity for brutality and violence and has been made into an Infernal Behemoth!" appears.