Box Weapons are small, hand-held cubes that hold tremendous power and Weapons within them, which are fuelled by the Dying Will Flame of the user. For the Weapon within to be used, the right type of Ring, Flame, and Box must be matched up (i.e. Storm Ring, Storm Flame, and Storm Box Weapon) The higher the rank of the Ring, and the more pure the Flame and thus the more powerful the Weapon will be. It should also be noted that the Sky Flame can be used with any Box Weapon but it will not be able to unlock that Box Weapon's full potential.
The original idea for Box Weapons was based on the work of a biologist from the 4th Century, Geppetto Lorenzini. He designed 343 different Animal based Weapons but lacked the technology to create them. Centuries later, three scientists: Verde of the Arcobaleno, Innocenti, and Arms-Dealer Koenig found Lorenzini's designs and created the Box Weapons by using the power of the Mafia Rings as a power source, which solved many of the problems. After they created all of the Box Weapons that Lorenzini designed, they continued to invent new types of Boxes and Weapons, for example storage Boxes. Thinking of nothing but funding their research, they sold the Box Weapons to the Mafia for very low prices. Now, of the three scientists, only Koenig remains alive and continues to create newer box weapons (Verde was dead in the future but was later revive by the cost of Yuni and Gamma sacrifice and created the Vongola Box Rings ). The effects of the Weapon match the Flame's characteristics, but may be utilized differently depending on the weapon itself.
In the Future Arc, Byakuran is revealed to have used his power of going to parallel worlds to gather enough information and resources to create Dinosaur based Box Weapons. These include the T-Rex used by Zakuro and the Nuvola Velociraptor used by Kikyo.
Sky Box Weapons
Sky Box Weapons are unique in that they are very delicate and must be opened and commanded in a very specific way which has yet to be explained. Dino states that Sky Box Weapons are especially delicate, and can't be opened without being careful. It is later suggested by Kyoko that the Sky Box Weapon acts in accordance of the user's mood. In which case it starts shaking and quivering violently when the user is nervous. 
|Leone di Cielo (Sky Lion)||A Lion which is the original form of Xanxus' Animal Box Weapon. When Xanxus is angered and his battle wounds from the 9th Vongola Boss appear, it obtains stripes, turning it into the Ligre.||Xanxus|
|Ligre Tempesta Di Cieli (Sky Storm Liger)||It exhibits traits of the Tigre Tempesta. Its main means of defense appears to be petrifying other Box Weapons by roaring with the sky's Harmony characteristic. Olgert has stated that a harmony attack of this type is exceedingly rare. It also attacks enemies through its roars, which destroys them with Degeneration. The combination of two attributes is possible by combining two kinds of Sky Flames together. The Sky Flames released from the Ring carry the property of Harmony, but Xanxus's own Flame of Wrath hold characteristics of Degeneration - a Storm Flame's property, thus creating a Box Weapon with two Flame properties. Used by Xanxus of the Varia, who named his Weapon Bester.|
|Leone di Cieli Version Vongola||An orange specialized Box Weapon given to Tsuna by his Future self to combat the Millefiore. He was unable to control the Box when he released it and it attacked him. The form it took when it was released was not its true form, as Tsuna improperly released it. The creature contained within the Vongola Sky Box, when released properly, is the Leone di Cieli (Sky Lion): Version Vongola, whose mane is made of the Sky Flames and is wearing either a helmet or a visor. It's name appears to be Nuts. Nuts can petrify and break through other Box Weapons by harmonizing with them via roaring, similar to Xanxus's Sky Lion. All the Vongola Boxes were remodeled in the past, allowing the Animals to transform into Weapons.
Modo Attacco: Mitena di Vongola Primo (Attack Mode: Vongola First's Gauntlet): In this transformation, Nuts combines with Tsuna's X-Gloves and turns into the gauntlet. As with the First's Cloak, the Gauntlet also has a roman numeral I on it. We are currently unaware of its true power due to it being defeated by Byakuran. While using this he can concentrate all this flame into a single attack without charging called "Big Bang Axel"
|Cavallo Alato (Sky Horse)||A large, domesticated Horse covered in Sky Flames. It is able to fly in the air, and paralyze even large Box Weapons by stomping them with its hooves. Dino named it Scuderia.||Dino|
Pegasso Supel Salto Volante (Sky Pegasus)
This is a Box Weapon used by Dino against Daisy. The Sky Pegasus is the full power release of Dino's Sky Horse. The wings given to the Sky Horse are used to harmonize with other Box Weapons and slice them in half.
|Sky Turtle (Anime Only)||
This is used by Dino. A Box Weapon of rejuvenation. It has Sky Flames to stabilize health and Sun Flames to make the body active stored in it's belly.
Storm Box Weapons
This boxes normaly have offensive abilites. A example of no offensive abilities is the Storm disc, the Throne and the Flying Carpet.
|Dark Scythe||A long Scythe covered in Storm Flames, which releases a curved Storm Blade when swung.||Tazaru & Nosaru|
|Spikes||Red Spikes made of Storm Flames form on the users back and pierce whatever is behind them.||Tazaru|
|Dark Slicer||Three spinning disks that follow their targets until they hit. Their speed increases by absorbing the enemy's Flame until their speed is 1.5 times faster than the target. They are designed to never hit the user.|
|Scorpione di Tempesta (Storm Scorpions)||Several Scorpions that fire streams of Storm Flames from their tails. They can cling to walls and easily destroy walls.||Bianchi|
|Flying Carpet||A Flying Carpet that suspends the user in midair by generating Storm Flames.||Baishana|
|Serpente Tempesta (Storm Serpent)||A giant Snake, identified as a Tsuchinoko by Gokudera, that grows by feeding on the Box Weapons of others. As its size increases, so does its power accordingly. Its scales are covered in Storm Flames, and damage anything that touches them. It has been stated that it is a relatively new Box Weapon created by Box-Maker Koenig.|
|Cervo Volante Tempesta bel Otto (Eight Storm Stag Beetles)||Stag Beetles with Storm Flames covering their mandibles. They move in random patterns at high speeds, making it difficult to hit or avoid them.|
|Sistema C.A.I. or Cambio Arma Istantaneo (Instantaneous Armament Change System)||A complex puzzle of four Storm Boxes, four Rain Boxes, two Lightning Boxes, two Sun Boxes, and four Cloud Boxes. Only one who can utilize all five of these types of Dying Will Flames can use this Weapon, the only one being Gokudera so far. The main structure is a set of four bone Rings that can shield the user from Attacks or capture enemy Box Weapons. The Storm Flames of the bone Rings are lightly covered in Rain Flames, which neutralize the initial part of the Attack. Of the sixteen Boxes, there are four skull Rings for each of the other Dying Will Flames, Uri, and Flame Arrow. The main method of Attack of burst of Dying Will Flame or missile projectiles that have two kinds of Flames. The strength of these combination is the instantaneous change from one Weapon to another. The most powerful attack is the combination of Storm and Lightning Flames into a concentrated burst called Flame Thunder. Gamma believes this to be an invention of Innocenti, because of its flashiness.
|Vongola Storm Box||
A red specialized Box Weapon given to Gokudera by his Future self to combat the Millefiore. Reborn said that it was an extension to complete his Sistema C.A.I. and which makes it perfect.
Uri transforms Gokudera's Flame Arrow Box Weapon into a Bow, modeled after the 1st Storm Guardian's Weapon of choice. The Bow resembles a modified Flame Arrow, as in it is still mounted on Gokudera's arm. When he pulls on the bow it realeases a more concentrated Flame Arrow, called Tornado Flame Arrow.
|Visone Tempesta (Storm Mink)||A small Mink whose fur generates Storm Flames which degenerates anything that touches it. It moves that blinding speeds, making it nigh impossible to avoid its deadly attack. It can also produce a Flame shield by rapidly rotating its tail.||Belphegor|
|Throne||Rasiel of the White Spell sits upon a thrown that is suspended in air by Storm Dying Will Flames that protrude from the chair legs.||Rasiel|
|Pipistrello Tempesta (Storm Bats)||Several Bats that use faint Storm Flames as the basis for echolocation. When the Storm Flames reflect off of an object, 80% of the original output stays with the object, and degenerates it.|
|Tigre Tempesta (Storm Tiger)||A Box Weapon mentioned by Olgert, it is supposedly a Tiger Box Weapon with degeneration characteristics. Xanxus's Liger Tempesta Di Cielo may come from the fusion of his Flame of Wrath which has Storm Flame, Leone di Cielo, and this Box Weapon.||Unknown|
|Talpa Tempesta (Storm Mole)||A Box Weapon mentioned by Spanner, which can apparently burrow through the ground for excavation purposes and carries degeneration properties. This may also imply that Spanner has a Storm Attribute Flame.||Spanner|
Rain Box Weapons
|Vongola Rain Swallow||A Swallow covered in Rain Flames that can create a wave of blue Flames in front of an attack or even create a heavy rainfall for concealment purposes. Used by Yamamoto. Yamamoto named it "Kojirou"
|Water||The Box that releases a surge of Water that can be used for defensive purposes by creating a barrier.|
|Vongola Rain Akita||A blue specialized Box Weapon given to Yamamoto by his Future self to combat the Millefiore. It appears to be an Akita that carries three broad swords made out of water on its back. Two swords are wielded by Yamamoto, and the Akita holds the third in its mouth. Yamamoto named it "Jirou" strangely enough, the Akita is not the one that perform the cambio forma but rather Yamamoto another Box Weapon, Rondine di Pioggia Ver. Vongola.|
|Riding Crop||A melee Weapon in the form of a horse jockey's whip, or Riding Crop, covered in blue Rain Flames.||Glo Xinia|
|Kraken di Pioggia (Rain Giant Squid)||A gigantic Squid named after the mythical beast of the ocean, and in in which only its arms have been seen. It strikes and entangles enemies with its ten arms, which can be covered in twisters fused with Rain Flames.|
|Gufo di Pioggia (Rain Owl)||A snowy Owl covered in Rain Flames. It can create a tidal wave that extinguishes other Dying Will Flames and cancel special attacks such as illusions. Originally used by Glo Xinia of the White Spell, but is now used by Chrome with her Mist Flames.||Chrome|
|Squalo Grande Pioggia (Heavy Rain Shark)||A massive great white Shark covered in Rain Flames, that can swim through the air and easily charges through everything in its path.||Squalo|
|Pellicano di Pioggia (Rain Pelican)||A large Pelican that releases a surge of Water to quell other Flames, which can also be used as a strong defensive shield.||Olgert|
|Elefante Forte Pioggia (Heavy Rain Elephant)||An enormous Elephant covered in Rain Flames that can expel a jet of water to extinguish other Flames. The elephant is large enough to stomp three people at once with one foot. Another Box can be used to create Elefante Triplice (Triple Elephant).
|Delfino di Pioggia (Rain Dolphin)||A Dolphin that is capable of receiving telepathic instructions from Basil and utilizes Rain Flames.
|Rain Sea Shells (Rain Snails)||Explosive shells, released by Bluebell.||Bluebell|
Sun Box Weapons
|Saldatore del Sereno (Sun Scalpel)||By using the Sun's activation property, the scalpel rapidly increases the rate of healing, to the point that cuts and wounds heal after only several seconds. A side effect is that the area is itchy afterward.||Ryohei|
|Rope||A long Rope covered in Sun Flames wraps around the target and can not be broken unless the user does it himself or is broken by a stronger Flame.|
|Vongola Sun Kangaroo||
A yellow specialized Box Weapon given to Ryohei by his Future self to combat the Millefiore. The Animal is Kangaryuu, but with what appears to be twin cannons on it's back and boxing gloves.
Cambio Forma: Knuckle of Maximum Break: With the cannons strapped on its back, shoots Ryohei with high purity Sun Flames then Kangaryu transforms into a pair of boxing gloves, headgear and Flame Boots. Only lasts about 3 minutes. The Sun Flames are used to hyperactivate Ryohei's muscles and nerves.
|Kangaryu (Way of Honor)||A female, battle-scarred Kangaroo that creates Weapons covered in Sun Flames, and releases them from her pouch. The Box Weapon itself is a backup-type support box, but it also has an impressive amount of power itself.|
|Sereno (Clear Sky or Sun) Gloves||
Boxing gloves charged with Sun Flames by Kangaryuu, giving them high-speed healing abilities. This rapid healing make them impervious to the degenerating Storm Flames.
|Ragno Ciel Sereno (Clear Sky Spiders or Sun Spiders)||Unactivated Box Weapons that are shot into the bodies of enemies, and are "activated" by the user. The tiny Spider eggs will grow, hatch, and then burst out of the enemy's body. These same Spiders can create a wall of spider webs to block one's movements.||Gingerbread|
|Melone Base||The entire Millefiore Japanese Base is a Box Weapon that is activated by Sun Flames. Each of the rooms are box shaped and there are empty slots with no rooms. In a specified room, Shoichi Irie is able to move the boxes around, manipulating the base as he sees fit. The basis for this Box Weapon appears to be a group of giant Venus Flytraps which are actually moving the boxes.||Shoichi Irie|
Pavone del Sereno (Peacock of Serenity)
|A Peacock whose tail is covered in Sun Flames. When the tail is spread out wide, those close to it will rapidly heal, however their hair and nails will also grow quickly.||Lussuria|
|Rinoceronte del Sole (Sun Rhino)||A Rhinoceros with Sun Flames. It abilities are unknown, as it was destroyed before it could display any.||Daisy|
|Sun Box of Carnage||A Box burried in Daisy body. When activated, it transforms him into a lizard/human hybrid enveloped in Sun Flames with wings made of Flame. This form increases his speed and strength immensely as well as giving him the ability to use his Sun Flames to regenerate any part of his body.|
Lightning Box Weapons
|Shot Plasma||Eight billiard balls connected to one another with Lightning Flames. Their movements are near impossible to read and impossible to dodge completely, even for Hibari in the Future.
|Elettro Volpi (Electro Foxes)||Two Foxes covered in Lightning Flames, they can be used as solid shields or electrocute everything in between themselves. Their initial forms are actually incomplete, and their full potential is released by another Box, upon which they become Nero Volpi (Black Foxes). In their new form, their power becomes multitudes greater, and can generate enough electricity to fill an entire room.|
|Turbine Shoulder Armor||Large shoulder pads with three turbines on each shoulder. After charging the turbines with Lightning Flames, the Flame are released at once, and create a massive explosion upon impact.||Dendro Chilum|
|Lancia Elettrica (Electric Lance)||A large lance covered in Lightning Flames; with the green Flames' solidifying property, there is almost nothing this lance cannot pierce.|
|Elettro Cinghiale (Electro Boar)||A Lightning attribute Boar with five times the penetration power of Lancia Elettrica. Its two horns together are called the Doppio Corno Lancia (Double Horn Lance).
|Torpedine Fulmine||A Lightning-type Electric Ray that carries pikes on its back and can attach to the user back. Together, the Ray can fly the user and itself at incredible speeds.
|Vongola Lightning Buffalo||
A green specialized Box Weapon given to Lambo by his Future self to combat the Millefiore. It is later revealed when Gokudera is tutoring him and Ryohei that it is a Lightning Buffalo.
Mist Box Weapons
|Parachute & Balloon||Floats in the air using a Mist Flame like a small hot-air balloon, warns the user when an enemy is approaching.||Lal Mirch|
|Mist Owl (Gufo di Nebbia)||After Chrome defeated Glo Xinia, she took possession of his sub-Box Weapon, which now carries Mist Flames instead of Rain Flames.||Chrome & Mukuro|
An Indigo specialized Box Weapon given to Chrome by her Future self to combat the Millefiore. The Animal is Chrome's Owl but with armor on it's wings.
|Spettrale Nudiblanc (Spectral Sea Slugs)||Several dozen Slugs that create Illusions in the room they are occupying. These Illusions are real because of the Mist Flames' construction property. They also act as Weapons themselves by self-destructing upon contact.
|Spettro Spada (Illusion Sword)||Genkishi's most powerful Sword and the strongest Mist-type Sword. The Sword is able to instantly construct multiple copies of itself and attack simultaneously.|
|Armatura (Weaponry of War, lit Suit of Armor)||In the same league as the Illusion Sword, it covers the user in armor similar to a Medieval Knight, and amplifies the user's Illusions. When combined with the power of the Hell Ring, the user takes the form of a skull-faced knight with no limbs connecting the seemingly floating armor. According to Genkishi, the true power of the Ring is an Illusion of skeletons expelled from the skull knight's mouth. These skeletons take the appearance of the enemy's loved ones and Attack him, in an attempt to break down the user's mind or keep him from moving. Genkishi can also lie that the Illusions are tied to the lives of their real counterparts if the enemy has no knowledge of their whereabouts. However, the Illusions are susceptible to attacks like the Zero Point Breakthrough: First Edition, since they are made of Mist Flames.|
|Fran's Box Weapon||Fran's Box Weapon is a miniature Belphegor, draped in Mist Flame.||Fran|
|Mist Sea Snakes||Hundreds of Snakes that can fly through the air, pierce through even the hardest surfaces. Their hardness comes from the small amount of Lightning Flames lining the surface of the Snakes. In conjunction with his Illusions, the Snakes can appear to be part of the users body, leaving the user to appear as simply a floating head and spinal cord.
|One of the 1st Boxes that were created by Verde who gave it to Viper in order to try it, along with two other Mist Boxes, during the 3rd Trial. However it wasn't fully completed as it easily melted and lost it's shape.||Viper|
|A Mist Box Weapon created by Verde. It was one of the 1st Box Weapons that were created and appeared in the past. It was used by Viper against Yamamoto and Ryohei during the 3rd Trial. When used, many spinning Starfish that emmit Mist-Flames come out of it. Those who brake are fused together and create a single but bigger Starfish. Yamamoto and Ryohei manage to defeat them by forcing them to fuse into one and then destroyed it.|
Cloud Box Weapons
|Scopolendra di Nuvola (Cloud Centipedes)||Long Centipedes that extend, constrict, and even pierce enemies, and can seemingly absorb Dying Will Flames due to the Cloud Flames around them.||Lal Mirch|
|Porcospino Nuvola (Cloud Hedgehog)||A small Hedgehog that immediately spins in a straight line upon release. By absorbing other Dying Will Flames, the spikes on its back grow to create a Globe of Needles. Enemies can be trapped inside the Globe, which quickly burns whatever oxygen is necessary to breathe. It can only be broken from the inside by applying a Flame of a higher purity. There are multiple Boxes of this Animal; a maximum of three. The Hedgehog can also create small portions of the globe as foot steps for ascending or shields against enemy attacks. A new form, called Globe of Needles: Reversed, requires using three Rings at once on one Box. Its difficult to pull it off without breaking the Box. But if successful, the Hedgehog grows, pushing all other Box Weapons outside, and leaving any living organisms inside. The walls of the Globe are covered in spikes, and the Flames quickly burn any remaining oxygen. This method of fighting is meant to make up for Hibari's lack of Rings that can withstand his enormous Flame.||Hibari|
|Cloud Tonfas||Hibari in the Future keeps his tonfas in a Box Weapon. They are now covered in Cloud Flames and still hold all of their predecessor's hidden Weapons, as well as some new ones.|
A purple specialized Box Weapon given to Hibari by his Future self to combat the Millefiore. The Animal is an advanced version of Hibari's Cloud Hedgehog.
Cambio Forma: Aluade Handcuffs The Vongola Cloud Hedgehog transforms into a pair of black Handcuffs with thorns, which can multiply in numbers and used to capture/entangle the enemy.
|Demon Bear||A Bear Box Weapon that is speculated to be of the Cloud-type. It was eaten by the Serpente Tempesta before its abilities were revealed.||Nigella|
|Cloud Whip||Iris uses a Cloud-type Whip on her Death Stalk Squad, causing their muscles and ligaments to grow. This greatly increases their muscle mass, physical strength, and can stretch their limbs to inhuman lengths.||Iris|
|Campanula di Nuvola (Cloud Bellflowers)||Seeds are placed on a target, and slowly grow into flowers by feeding on their Dying Will Flames and body. As the flowers bloom, the roots dig into the victims skin, absorbing as much nutrients as possible, resulting in a patch of flowers and splattered blood.||Kikyo|
|Velociraptor di Nuvola||A Dinosaur based Box Weapon created by Millefiore scientists. This Box Weapon was shown when Kikyo was battling Lambo. When activated, it summons a Velociraptor which can be cloned using the Cloud-Flame as seen in the manga.|
Box Weapon Sets
These are Box Weapons that are not specific to a particular Flame.
Battery Box - A Box used to store Dying Will Flame for Future use.
Dying Will Flame Boots - Special Boots that allow the user to fly in the air by emitting their respective Flames from the soles.
- Sky - Byakuran
- Storm - Nosaru, Tazaru, Rasiel, Zakuro
- Lightning - Gamma
- Sun - Ryohei, Daisy
- Rain - Olgert
- Cloud - Iris Hepburn, Kikyo
- Mist - Torikabuto, Saru (Genkishi)
- It seems that when a Vongola Box Weapon is opened, the resulting animal has an eye with three rounds in it, similar in appearance to the White Round Machine the Boxes were previously housed in.
- It is seen that all Vongola Animals have a Crest on their forehead with a roman numeral I.
- A Sky Flame can open any Box, but only the right Flame can unleash its full potential.
- The original names of most of the Box Weapons are in Italian.
- From the time the Box were originally designed, it was seen as over technology, meaning that the technology needed to create them was beyond what was available at the time.
- Kyoya Hibari in the Future has stated that, like most revolutionary discoveries, the creation of the Box Weapons was simply a coincidence.
- Most of the Sun Box Weapons shown are actually support-type Box Weapons. This is most likely because the Sun Flame's Activation Ability is most suited to supporting others, usually by healing their wounds rapidly.
- The Tri-Ni-Set is represented by the number 7 to the power of 3, which would not make 21 but rather 343, the exact number of blueprints left by Gipetto.