Ouroboros

Ouroboros is the Divine Drag-Ride of Fugil Arcadia. It is an Artifact - a transforming Drag-Ride - and the largest and most powerful Drag-Ride in the setting. It comprises one half of the Zero Ruin Avalon.

Appearance
The main body of Ouroboros is a super dreadnought class Drag Ride resembling a chalk-white castle or fortress. It surpasses all other Drag-Rides in size, even surpassing the Ruin Gigas. It is covered in silver multifold armour and possess countless cannons. A mechanical ring is located on its back. Its enormous head is streamlined in shape and has, at its centre, a cockpit covered in reinforced glass. Arshalia sits in this cockpit and pilots the Drag-Ride.

Ouroboros also has a detached portion in its special armament Infinity. This take the form of another Divine Drag-Ride, which is worn by Fugil.

Main body
Blade: A colossal Mithrildite blade resembling a normal Drag-Ride's, but enlarged to the point of being comparable to a tower in size. Its sheer mass gives it incredible power. Even the wind and shockwave left by a slash with this Blade can destroy buildings. A direct hit can instantly bring down a Divine Drag-Ride. However, it can be blocked by the master martial artist Magialca Zen Vanfrick using Jormungandr. Its trajectory can be altered by the Divine Raiment of Vritra and the attack can be avoided by approaching to within a certain distance of Ouroboros.
 * Quick Draw: A high-speed slash performed by using mind control operation in addition to body control operation. To perform this technique using Ouroboros, Fugil must enter the chest portion of the Drag-Ride to control it directly.

Cannons: Several large Cannons emerging from Ouroboros' chest, that surpass even those of the installation-type Jormungandr. These fire blasts of flame. When enhanced by Reload on Fire, these are powerful enough that Vritra's trajectory control cannot fully divert them. Under normal circumstances, these take dozens of seconds to gather the energy needed to fire, but this is shortened when accelerated by Reload on Fire.

Laser cannons: Ouroboros possess numerous smaller cannons which can fire hundreds of lasers at once. However, if weakened by a smokescreen, these lasers can be stopped by a barrier.

Charge Blast: A support ability which transfers energy to another Drag-Ride to strengthen it. While normal Drakes have a similar ability, Charge Blast is on an entirely different scale, being comparable to a Divine Raiment. It strengthens even the power of the pilot's defensive membrane (which is normally too weak to stop an attack) by dozens of times, allowing it to stop attacks.

Self-repair: Ouroboros can repair damage by summoning and assembling supplementary armour into the damaged portions. This is again similar to a function possessed by Drakes, but Ouroboros performs it with much greater speed. It is even capable of repairing a severed limb. However, repair is impossible if the damaged parts are frozen. Moreover, repairing major damage consumes a lot of energy, preventing Ouroboros from doing anything else.

Infinity
One of Ouroboros' special armaments, Infinity can transform into any other Divine Drag-Ride. Even if its current form is destroyed, it can summon another Divine Drag-Ride. However, using even one type of Divine Drag-Ride requires extraordinary stamina, mental strength, and skill. Only a Drag-Knight on the level of Fugil can fully use the infinite number of Divine Drag-Rides provided by Infinity.

Bahamut Typhon
 * Reload on Fire: Bahamut's Divine Raiment, which slows and then accelerates time within a target. Specifically, it slows time to a fraction of its usual speed for five seconds, then accelerates it several times in the next five seconds. When enhanced by Charge Blast, the degree time alteration is greatly increased. In the accelerated state, Fugil becomes so fast that it is impossible for his enemies to react or escape. However, the slowing of time is also increased, to the point that activating Zero One now takes dozens of seconds. Reload on Fire can also be applied to other things, such as to the main body of Ouroboros in order to strengthen it. When doing this, Fugil holds off the enemy during the first five seconds to defend the main body.
 * Violent Strike: This technique involves using Reload on Fire to slow down the enemy, then attacking them while they are vulnerable, and finally accelerating them so they suffer from the attacks received while slowed down.
 * Quick Draw: A high-speed slash performed by using mind control operation in addition to body control operation.
 * Recoil Burst: An incredibly-powerful slash performed by using the two systems of control in a contradictory way, intentionally causing Bahamut to rampage.
 * End Action: A series of consecutive attacks, performed by alternately using mind control operation and body control operation. When performed by a physically-superhuman Drag-Knight like Fugil, it can last for several minutes.
 * Over Limit: By removing the limiters normally in place to protect the Drag-Ride and its user, Bahamut can become far more powerful. During this state, Bahamut can attack with such force that it damages itself.
 * Pile Anchor
 * Biting Flare
 * Missing Faith: The Divine Raiment of Typhon, a jet black surge that neutralises other Divine Raiments and weakens the output of other Drag-Rides.

Zero One
Another of Ouroboros' special armaments, which uses the teleportation system of the Ruins to transfer a target to a space inside Ouroboros or Avalon. This space is spherical in shape and surrounded by silver walls, and is immune to interference from external forces. In this space, time is stopped except for the user. Activating Zero One takes about one second when using mind control operation.

Zero One can be used to avoid an enemy's attack. If the user is in Bahamut at the time, they can activate Reload on Fire while in the protected space, to remain safe while slowed down, and then counterattack once they are in the accelerated state. It can also be used to take in an energy attack, such as Vritra's lightning attack, and release it as a counterattack.

However, Zero One is not without weaknesses. It is limited in the amount of material it can store - something the size of Jormungandr exceeds this capacity. It can only hold one thing at a time, and must release this before taking in something else. It also can only store a target for a maximum duration of around one to two minutes.

Endless
Ouroboros' Divine Raiment. It has two uses, depending on whether it is being amplified by the other seven Ruins or not.

Without the other Ruins, Endless creates a territory of rainbow light with a radius of a hundred kl, in which the rules of the world can be changed. This is dependent on the internal mechanisms of Avalon. If these are destroyed, Endless will not function.

"Those who aren’t wearing Drag-Rides and their movement won’t be perceived in this world": This change means that people who are not wearing Drag-Rides can no longer be perceived. While attacks that affect an area can still hit them, the user can evade these using Zero One.

"It’s impossible to get outside from inside a building by one’s own will": This change makes it impossible to escape a building.

"──Destructive power other than direct attacks using mass will become ineffective": This change means that only attacks that derive their power from mass continue to work. Energy attacks become completely ineffective, even ones as powerful as a bombardment from Jormungandr. This gives Ouroboros an advantage, as its overwhelming mass makes it superior in a battle of purely physical attacks.

"──When oneself receives an attack that is unleashed by another person, they won’t receive an attack from another different person": This change means that when a person is attacked by someone, they are unaffected by attacks coming from any other person. This gives an advantage to Ouroboros' user if they are alone, as they can fight without restriction while their opponents cannot take advantage of their numbers. It does not apply if someone attacks their own self, but it does apply if they use an attack originating from another person (e.g. by storing it with Zero One and releasing it).

When amplified by the other seven Ruins, Endless can be used to alter the perceptions of memories of people on a worldwide scale. It can rewrite history, regardless of how much destruction or death has occurred.

However, people who have undergone Baptism are resistant to this perception manipulation. The greater the degree of Baptism, the greater the resistance. However, this is not enough on its own; a person must have the will to resist in order to truly break free of the manipulation.

Quotes

 * "──Come from the tower of double helix. Spin all creation of infinitude that become zero, and establish the law of heaven and earth’s creation. Artifact – Ouroboros!" - the passcode of Ouroboros, as recited by Fugil.