Spanish for "Zero", Japanese for "Hollow Flash") is a strong energy attack used by Hollows, Arrancars, and Vizards. It is comprised of concentrated Reiryoku and can take on many forms; bala, hoja de cero, Patada de cero, etc. Most are crimson in color when used but some are shown to have various colors. The color black cero is reserved for Cero Oscuras. The power, force, speed, and blast area of the Cero is dependent on the strength, spiritual power, and sometimes skill of the user (i.e., the stronger the user, the stronger the attack).
The charging and firing time for Cero varies greatly, from charging relatively fast to firing it instantaneously firing without much charging. Despite the damage it can cause at long range distances, the damage which a Cero causes as an explosion is more dangerous when used up close. If audibly spoken the word 'Cero' prior to loading it, its power will be considerably increased but if audibly spoke the word prior to casting it, it will fly considerably faster.
The size of a cero is proportionate to the size of the user (i.e. the bigger the user is the bigger thecero will be with no extra cost. Resembles Yammy's cero when he released.)
Novice Cero: Reitsu Control Stat: E–E+
This is a barely charged and is the weakest formof Cero, normally used by the menos-class Hollow. This kind of Cero is dependent on the strength/rank of the user, but is no doubt still theweakest Adjuchas can only fire the attack from one area of the body.
Normal Cero:(Reitsu Control Stat: D–D+)
Average level and barely charged, about half or less as powerful as the user's fully charged cerowould be. This can be performed by your average arrancar.
Beautiful Final Holy Wonderful Pretty Super Magnum Sexy Sexy Glamorous Cero:(Reitsu Control Stat: C–C+
Putting their hands together making a shape of their choosing, the user fires an extremely wide cero in the shape they formed with their hands.While it is very difficult to avoid, it is not much more than an normal Cero in terms of power.
Double Cero: (Numero Reitsu Control Stat: C–C+)
User can charge two circular Cero in front of themselves. When fully charged, the two Cero will fuse together in the middle before firing as asingle, highly destructive blast. If the two cero are not merged than each fires as separate fully charged cero.
Fully Charged Cero: (Reitsu Control Stat: C–C+)
A more powerful Cero than the regular, un-charged variant. This type takes longer to formulate, for some user with higher reiatsu control it can be shorter, but is indeed more powerful than the Normal Cero. Cero is dependent on the strength/rank of the user.
Cero Doble: (Reitsu Control Stat: C–C+)
Not to be mistaken with Double Cero. Cero Doble is a technique used to absorb an incoming Cero, and mix it with the absorbers own reiatsu, firing it back and essentially doubling its power. This move can be used against any type of Cero lower than Double Cero. Depending on the user, however, it might be used against a higher leveled Cero.
Onda De cero: (Reitsu Control Stat: C–C+)
The user softens it's reiatsu making the attack smoother in the middle of his/her body then releases it with cero and it creates a very thin layer wave of cero (it basically looks like a flat donut around the whole body) and spreads about 8 to 10 feet, it depends on the user, if strong enough it can spread wider and get thicker. The whole process from getting from the user to 8 feet is about 2 and 1/2 seconds, 10 feet would be 3 and 1/2. It basically can either back your opponent away or if it hit's them they get burned and pretty injured.
Multi-Beam Cero: (Reitsu Control Stat: B–B+)
User places his fingers outwards and produces multiple Cero, usually around 3-4. The Cero produced are about as strong as a Charged Ceroand this technique takes about a minute amountof charging time. This technique is moderately high-leveled and cannot be used by average or new Arrancar, most likely higher-leveled Numeros.
Patada de Cero: (Reitsu Control Stat: B–B+)
The user's leg heats up as the cero surrounds the leg and when it hits/touches/interacts with other objects it burns the part hit and makes the impact of the kick stronger. It also possess damaging effects on the inside of the opponent, somewhat heating it up causing pain on the injured part. I may get weaker if useda lot by the user. Will gradually start to burn the leg. It can also be discharged in the form of a projectile. High level technique.
Cero Cornea: (Reitsu Control Stat: B–B+)
By channeling a small amount of Cero energy into the eye, causing it to flash red momentarily, the user can fire a small but powerful cero blast.The blast is powerful enough to destroy boulders.
Hoja de Cero (Zero blade): (Reitsu Control Stat: B–B+)
User channels cero energy into their blade to heat it. Increasing it's cutting power and adding burn damage. This will let the blade cut through any solid object (except zanpakutou).
While effective as is, charging the blade with cero energy is only the bases of this technique as it has an extension. The user can use the time of the cero sword to charge the cero energyinside it to the desired power and then fire it off as a cero blast. Or If the blade it swung while releasing the energy it will create a cutting effectmuch like the original effects, excepts this time if is in the form of a projectile.
Bala: (Reitsu Control Stat: B–B+)
While similar in function to a Cero, a Bala is not nearly as powerful, but, thanks to its composition, its speed is 20 times faster, allowing it to be fired in quick succession. In addition, it possesses more concussive force than a typical Cero does. The overall speed and power of a Bala varies depending on the Arrancar using it; Some are powerful enough that they can blast large holes into an enemy's body.
Gran Rey Cero: (Reitsu Control Stat: A–A+)
By mixing their own blood with a Cero, an Espada/Fraccion can fire a Cero with much greater attack power and speed, in addition to having a change of color unique to them. It is many times more powerful than a normal Cero, disturbing the fabric of space as it travels. Upon release, it spins like a razor as it compresses and decompresses due to the sheer speed and raw power.
Bala Barrage: (Reitsu Control Stat: A–A+)
A barrage of Bala blasts, each of which being as strong as the next. These are also extremely fast and thus make a hard to avoid 'technique'. This is a moderately high-leveled Attack.
Cero Oscuras (Reitsu Control Stat: S–S+)
(Japanese for "black hollow flash", Spanish for"Dark Zero") or more grammatically correct Cero Oscuro is a black Cero, used only by an Espada in their released form. It covers any exposed light into pitch darkness. This is an Espada's fully powered Black Cero." strong enough to destroy 1/2 of the dome over Las Noches. The superior Cero Oscuras is far greater than a average Cero. There is also the Instantaneous Cero Oscuras, which is fired at a much greater speed with the proportional strength of the Cero Oscuras.