*The Batarangs*

Between the Three Of You: Yourself, Robin, and Batgirl have the following 'Batarangs'...

48 "Common Baterangs": this is a throwing weapon, which means they can be used to attack 'At-Range' without a bow. They are made from two 'iron' bars oriented opposite of those for a pair of sheers, and like most Batarangs can be retrieved after being thrown. There are three stacks of 16 each, one for you, one for Robin, and one for Batgirl. Each hit with a Batarang inflicts 1-3 points of damage. (Less the armor on the location struck, as always).

1 "Egg Batarang": this Batterang will drop a spawn egg at a predetermined point on its flight path, spawning a MOB as normal when it lands.

1 "Camera Batarang": this lets you take Arial photographs. Must be 'Powered Up' with a "Charged Battery" and filled with "Camera Film" to work.

1 "Napalm Batarang": this Batarang places a Lava Block on the first solid block directly below itself at a predetermined point on its flight. The lava then spreads as normal. Must be loaded with a "Lava Bucket" to work.

1 "Bomb Batarang": similar to the Napalm Batarang this device ignites and drops a TNT block at a predetermined point on its flight path. To work it must be loaded with both a TNT block and a "Charged Battery". (Presumably, the battery is needed to provide the spark to ignite the TNT...)

1 "Shock Batarang": Must be charged up with FOUR "Charged Batteries" to be used. Wherever this Batarang strikes, a Lightning Bolt hits! Beware catching this Batterang undischarged as the lightning bolt will hit YOU!

1 "Pyre Batarang": Must be Loaded with a Fire Charge to Work. Essentially allows the fire Charge to fly further by mounting it in a Batarang.

3 "Flare Batarangs": fires off a flare at a predetermined point on its flight. Must be loaded with a "Torch" to work. Can hold up to four torches, firing each one at a specific interval. The Batarang can also be loaded with "Fireworks", which shine other colors, fly higher, and burn for a longer time than torches. (Normal torches shine as a yellow starburst and the flare is brief.) May ALSO be loaded with "Redstone Torches", which produces a brief bright red flare when fired, but be aware that any torch is destroyed when fired as a flare, so you are burning Redstone Dust, which is Non-Renewable. Even though there are multiples of this Batarang type apparently they are single stack items, you must take up an inventory slot for each one, which probably indicates that they are intended to be distributed to each team member.

12 "Flash/Bang Batarangs": These Batarangs are some of the few which cannot be retrieved, because, they explode... When this Batarang strikes a solid target, be it a block or a creature, any creature or player within 6 unobstructed meters of the point of impact is struck deaf and blind for one minute -10 seconds per meter away from the point of impact. These Batarangs can apparently be stacked for, (according to the documentation,) up to 16 units but there are only enough for you, Robin, and Batgirl to have 4 each. To make a flash/bang baterang requires a standard baterang and eight units of gunpowder.

3 "Grenade Batarangs": Like the "Flash/Bang Batarangs" these explode on impact, except they do it like a unit of TNT. The book of documentation you found with each set of Super Gear says they are easier to make than the "Bomb Batarang" but not reusable, however they are also easier to wield, you just have to get used to their flight pattern, which is the same as a Common Batarang, not both that and how to time them for making the drop where you want them too. These also are declared to be stackable up to 16 count, though there is only enough for each of you to carry one. (However, you are seriously considering keeping all of them for yourself. Teenagers, explosives? [Maybe...? You're definitely going to have to consider carefully...])

3: "Smoke Batterangs": These must be filled with a Unit of Coal or Charcoal and powered up with a "Charged Battery" to work. When thrown they fill the area they pass through and all the blocks to either side for three meters with Smoke, obscuring vision, even that granted by a Nightvision Potion. (Or your "Night Vision Goggles", but not "Life Vision Goggles"...) Like most Batarangs, they can be retrieved after use. Like the "Flare Batarangs," these do not stack, which may explain why there's one for each of the 'bat' people... The smoke persists for 10 minutes if the air is still, such as inside most buildings or in other sealed areas, and correspondingly less time the stronger the prevailing wind.

All Batarangs fly in a parabolic arc that will return them to their thrower's initial location if thrown correctly accounting for the prevailing winds, assuming they don't strike a solid object (including any MOB) first. If non-explosive Batarangs strike a solid object they embed in it and must be retrieved before they de-res, unless it was a MOB in which case they fall to the ground at that spot. Only "Common Batterangs" and "Adimantium Batarangs"* can be enchanted, and they revert to unenchanted status whenever they strike any MOB but are otherwise fine. Baterangs of all types requires a special character ability to be used: "Batarang Proficiency". You, Robin, Bat-Girl, and Elfshot have it, but Catwoman doesn't.
*(You don't have any of those, but the "Batarang Documentation Book" says they are made from 2 Diamonds and 1 Iron Bar with a Crafting Table.)