The Oculus Inferni is a particularly vicious form of oculus. Each has only a single large central eye and a large toothy mouth arranged below it, much as the oculus rex (below), but the oculus inferni has no additional eye stalks at all.

The carapace of the oculus inferni has the ability to change colors. While this ability is basic and rather crude, combined with their silent flight ability it grants an otherwise-unsurprised oculus inferni the ability to surprise opponents on 1-3 on 1d6. When battle is joined, the monster’s hide changes to a brilliant orange-red color.

The oculus inferni will often choose to fly too high to be reached when fighting opponents who have only melee weapons (or who prove to have formidable melee attacks). Though it is vicious and aggressive, this monster is smart enough to choose to attack in ways where it cannot in turn be attacked.