After reading at  Endium's journal for his next comic, and looking around at some friends doodling some random "aerial capture drones" for theyr naughty situations, i've thought to design one myself. The sheet wasn't big enough to can hold a complete description, so it follows here:

The Captor drone 01 as the name says, is an automatic defensive/offensive system thought to be non-lethal and aimed to entrap and immobilize it's targets instead of killing them.
The drone itself is small enough to can fly safely in rooms, corridors, trough doors, and in some cases even inside air ducts, allowing it to move quickly in any kind of environment, however due to it's size is unable to carry away it's victims like most of the drones of this kind drawn by other people (i wanted to be a little realistical in here), but can still carry enough "smart rubber" (or living rubber) for many shots.

The drone is basically a computer with gunbarrels and rubber tanks mounted on a hovering system, halfway between an hovercraft and an helicopter it can be considered an mobile automated shooting platform, which can be programmed to can attack particular targets or to use particular tactics.

The V.I (Virtual intelligence) of the drone in it's basic programmation is supposed to fire at the target legs first to prevent any escape attempt, but it can be modifyed if needed. Indeed the Captor drone V.I. is very malleable, it can attack targets based on simple characteristics like "attack humans only", or in the most advanced versions (specially used by slave factoryes and enslaving facilityes, combined with the "harvester" drone) it can choose the best targets by itself using specific requirements like the bodyshape (If you're a fat guy, you're lucky if you meet one with this programmation).
It is adviseable anyway to make this drone work together with other ones of the same kind in number of 2 or 3 (more ones may limitate it's mobility) to increase it's efficacy.

The Captor drone basic weapon are two gunbarrels firing "smart rubber" shots. The susbstance is composed of nanomachines, and it is highly compressed into gooish bullets when fired, and it spreads on the victim body on contact, creating a very resistant coating. The Smart rubber also tends to stretch and stick by it's own on every surface close to the target to immobilize it on walls and/or floors, but also on the victim limbs themselves for restraining (if the victim has the arms close to the body, the smart rubber will bind the arms to the body, if the hands are close enough it will cuff them up, and so on).
The kind of weapon anyway can be customized with whatever you want, as long as it fits into the tanks on it's sides.