Gadacro

Gadacros were lesser tanar'ri demons that induced blindness in their prey and savored the taste of freshly plucked eyes. They were the carrion crows of the Abyss, appearing in the wake of death and disaster to harry and pick off the survivors.

Description
Gadacros resembled tall, cherubic children, about  in weight, with scaly, purple skin, black talons, and bat-like wings. They had large, horned heads, and were known to wear necklaces of eyeballs.

Behavior
Gadacros were savage, cruel, and vicious, but also craven. They would kill any creature available, torturing and tormenting them (often though blinding), and delayed the final act of murder as long as it was safe to do so. They had no true loyalty to each other, betraying their kin whenever convenient, and had a love for shiny trinkets, preferably those that could be worn or otherwise easily transported.

Abilities
Gadacros, like most other demons, possessed both darkvision and superior low-light vision. They were resistant to damage inflicted by acid, cold, and fire and were immune to damage caused by electricity and poison. Gadacros were known to speak the Abyssal, Celestial, and Draconic languages; they also possessed telepathy with a range of.

Gadacros had several magical spell-like abilities, allowing them to replicate casting the spells earthbind and mirror image each once per day. Like all tanar'ri, they could attempt to summon other tanar'ri once a day, specifically summoning one or two other gadacros.

When hurt, a gadacro could vanish and reappear in a puff of smoke in an unoccupied space that it could see up to away.

Combat
In combat, gadacros preferred to use their ability to fly to make quick attacks and harry opponents. A hit from a gadacro's claws had a chance to blind an opponent for almost a minute. If a battle began to go poorly, they would use a combination of their summoning ability and mirror image to increase their numbers.

Ecology
Gadacros were native to the Abyss, and were particularly common in the Screaming Peaks of the Death Dells. Although they did not need to eat, gadacros enjoyed eating meat, especially eyeballs plucked from still-living victims. They also liked shiny baubles that they could wear or easily carry.

Gadacros gathered in groups of up to twelve members, each led by an individual who proved themself smarter, stronger, and quicker than the rest. Gadacros had no compunctions about betraying one another, and a leader would use favoritism and similar divisive tactics to maintain control, as well as assassinating potential rivals.

Gadacros had little to do with the Blood War, and instead lurked on the plane-spanning Blood Rift. Here, they preyed on the unwary inhabitants of other planes. Some acted as spies for more powerful demons like balors in Faerûn, but they were unreliable informants.

An evil spellcaster could summon gadacros using the summon monster IV spell.