Planar Bestiary
A demon lord or powerful Abyssal general who has multiple izamaz at their disposal usually has them work with separate demonic teams so they don't squabble.
An izamaz is a fiend with a genius-level intellect who uses their knowledge to lead and support other demons. Their body is mostly a giant gnarled, brain-like head, with a leering demonic face in front and a few crab-like limbs dangling underneath.
Izamaz are very intelligent and know how to make the best use of their allies' abilities. Although dangerous on their own, they make their companions even more skilled and lethal; it's common for an izamaz to remain in the rear guard during a battle, giving advice and orders. Many of them consider it a point of pride and honor to not attack, seeing such things as a failure of their intellect and tactics. However, if they are personally threatened or the odds turn against their side, they're quick to step in with their own formidable abilities.
An izamaz believes their tactics are superior to anything other demons could come up with, and as such they don't take well to having their orders questioned or countermanded by demons of equal or lesser power—especially other izamaz. They have the practical sense to not begrudge imperfect commands from their superiors.
Motive: Lead and support other demons' conquests
Environment: Anywhere demon forces assemble, usually encountered singly with other demons
Health: 20
Damage Inflicted: Moderate wound (5 points)
Armor: 2
Movement: Immediate; short when flying
Modifications: Deception and resisting magical attacks as level 6; magical and planar lore as level 7
Combat: An izamaz prefers to use magic in combat at up to long range, creating effects that mark foes of interest (easing allied attacks against that foe), mentally moving objects, creating minor illusions, charming or holding individuals immobile, detecting an individual's thoughts, and inflicting necrotic damage on targets. Once per day an izamaz can magically teleport themself and a few allies up to a very long distance, dispel magic, or attempt to take complete mental control of an individual.
If their magic completely fails them, an izamaz attacks twice each round with their bite.
An izamaz is immune to poison damage.
Interaction: Izamaz enjoy manipulating and distracting their foes. In combat, they often claim to be an innocent creature enslaved by their demonic companions, all the while biting and blasting their foes with magic. If their opponents try to counteract whatever magic is "controlling" the izamaz, the demon thanks them for their help, praises them, and continues to attack.
Use: An injured izamaz, having used a potion that changed their shape to a normal-seeming humanoid, is recovering at a local inn. The stranger has roused interest because the coin they paid with is exotic, etched with images of what appears to be a two-headed demon.
Loot: An izamaz may have a few magical items, including a wand of force cube and an instant shelter scroll.
GM Intrusion: The izamaz casts a spell that creates a stone cube prison (level 5) around a character.