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    Ballistics for which you can choose the trajectory: Viper.

    Shiori Usami about Viper.[1] ,

    Viper (変化弾(バイパー), Baipā Lit. Changing Bullet ?) is a Gunner Trigger.

    Appearance[edit | edit source]

    Viper leaves a luminous trail in its wake, and can be recognized by the sharp angles it performs as its trajectory changes. When set to travel in a straight line, it is virtually indistinguishable from other Gunner Triggers; upon impact, this would also apply if the user's trion level is not taken into account.

    Overview[edit | edit source]

    The origins of this Trigger are unknown. It was initially used exclusively in trion cube form, until firearms were invented.[2]

    Abilities[edit | edit source]

    Viper is one of the mid-ranged options available to Border agents, which can be fired as a trion cube or through a firearm.[3] It is slightly less powerful than Asteroid,[4] as part of the Trion allocated to the bullet is spent on its signature ability[5] to travel along a predetermined trajectory,[1] which grants it even more complex flight paths than Hound.[6][7] Although the number of patterns available is theoretically infinite, due to Viper being the most difficult Gunner Trigger to master,[8] the vast majority of users learn only a few useful patterns. One of the most common consists in having the bullets move in a straight line before fanning out in multiple directions.[9] This can be done to quickly target multiple opponents unpredictably,[10] shoot around corners,[11] and feint going after one target only to catch another off-guard.[12] Another widespread application of Viper sees the bullets spreading out and then converging on the target from multiple angles,[9] allowing the user to circumvent the enemy's shield instead of breaking through it.[13][14]

    An extremely advanced application of Viper.

    A handful of Border agents are capable of creating new flight paths in real-time,[9] a skill which requires advanced visualization and keen spatial awareness.[15] This ability makes their shots extremely difficult to anticipate and counter,[16] on top of rendering most stationary obstacles useless as shelter against their fire;[17] they may even exploit an obstructed line of fire by curving the flight path of the projectiles out of sight so that the opponent will misestimate their point of origin.[18] Viper users capable of coming up with trajectories on the spot can target multiple opponents with the same bullet, so that if a bullet fails to hit its first target it may converge with the second. This can be due to the first target dodging so the bullets curve unexpectedly,[12] or the volley following a plethora of different trajectories so that at least some will miss the first target and thus be able to continue along their path. These bullets may be set to return toward the user after luring other opponents into believing that firing the volley left them vulnerable to attacks.[19][20]

    As a Gunner Trigger, Viper is less powerful than Attacker Triggers in normal circumstances[21] and consumes more trion than the latter.[22] The higher the trion amount of the user, the more of it can be allocated to its three basic parameters, enhancing its performance.[21] A safety mechanism is in place so that, should a bullet collide with a flesh and blood body, the owner will be knocked out from the pain and impact, without suffering any penetrating trauma.[23]

    Composite Bullets[edit | edit source]

    Name
    Image Components
    Description
    Tomahawk
    (変化炸裂弾(トマホーク), Tomahōku Lit. Changing Explosive Bullet?)[24]
    Viper + Meteor
    Tomahawk combines Viper's programmable flight paths with Meteor's explosive properties.[25]
    Unknown
    Viper + Viper
    The properties of this composite bullet are currently unknown.
    However, theoretically it would Double the specs of Viper's property
    Cobra
    (コブラ, Kobura?)[26]
    Viper + Asteroid
    The properties of this composite bullet are currently unknown.
    However, theoretically it would combine Viper's programmable flight paths property with Asteroid.
    Unknown
    Viper + Hound
    The properties of this composite bullet are currently unknown.
    However, theoretically it would combine Viper's programmable flight paths property with Hound's homing property.

    Techniques[edit | edit source]

    Image Name
    Description
    Birdcage
    (鳥籠(とりかご), Torikago?)[24]
    The user fires Viper through both the Main and the Sub and has the bullets converge on the target from multiple directions,[24][27] making them very difficult to block. The only known user of this tactic is Rei Nasu.[24]

    Users[edit | edit source]

    See also: Viper Users

    With a mere eight known users, Viper is the most unpopular Gunner Trigger. Among its users, three fire it in trion cube form, three through an assault rifle, and two through at least one handgun.[28] Rei Nasu, Kōhei Izumi,[9] and Hyuse[29] are the only agents capable of coming up with new trajectories on the spot, additionally they all use it in trion cube form. Viper is also used by an unknown number of trainees, and possibly by members of branches who do not participate in Rank Wars.[30]

    Trivia[edit | edit source]

    • Like other Gunner Triggers, Viper may have been named after a missile, the AGM-80 Viper, whose system offered Fire-and-forget performance. Alternatively, it may be derived from a rocket, the FGR-17 Viper.
      • The Viper is a family of venomous snakes. Snakes have many vertebrae which allow for increased flexibility, which is similar to how this Trigger is flexible in changing trajectory.

    References[edit | edit source]

    1. 1.0 1.1 1.2 World Trigger Manga and Anime Vol. 4 Chapter 29 (p. 4) and Episode 15.
    2. Daisuke Ashihara: Q: Are Shooters derived from Gunners? Who created the Shooter position and how did it happen?
      A: The order is that Shooter came first. There are those suited for handling cube bullets and those who aren't, so gun triggers were developed so that anyone can use bullets with a high degree of accuracy, and Gunners were derived.
      Source: Border Briefing File, Page 305, Question 156
    3. World Trigger MangaBorder Briefing File (p. 214)
    4. World Trigger Manga and Anime Vol. 20 Chapter 178 (p. 12) and Episode 93.
    5. Daisuke Ashihara: Special Bullets - Bullets with additional functions. Slightly less powerful
      Source: Gunner Triggers, Volume 4
    6. Daisuke Ashihara: Programmed trajectory. Can have more complicated flight paths than Hound.
      Source: Gunner Triggers, Volume 4
    7. World Trigger MangaBorder Briefing File (p. 215)
    8. World Trigger Manga and Anime Vol. 19 Chapter 162 (p. 15) and Episode 86.
    9. 9.0 9.1 9.2 9.3 World Trigger Manga and Anime Vol. 11 Chapter 97 (p. 13) and Episode 44.
    10. World Trigger Manga and Anime Vol. 9 Chapter 79 (p. 13) and Episode 34.
    11. World Trigger Manga and Anime Vol. 15 Chapter 125 (p. 16) and Episode 74.
    12. 12.0 12.1 World Trigger Manga and Anime Vol. 15 Chapter 126 (p. 11) and Episode 75.
    13. World Trigger Manga and Anime Vol. 7 Chapter 58 (p. 4) and Episode 27.
    14. World Trigger Manga and Anime Vol. 21 Chapter 182 (p. 6) and Episode 95.
    15. Daisuke Ashihara: Q: What kind of skills are needed to set Viper's trajectory in real time?
      A: The imagination to visualize something that isn't actually there as if it is, an objective viewpoint that grasps the state of the surroundings including yourself, the spatial awareness to correctly perceive the distance to the target and any obstacles, and so on.
      Source: Border Briefing File, Page 304, Question 148
    16. World Trigger Manga and Anime Vol. 11 Chapter 97 (p. 9-10) and Episode 44.
    17. World Trigger Manga and Anime Vol. 12 Chapter 101 (p. 6) and Episode 46.
    18. World Trigger Manga and Anime Vol. 7 Chapter 59 (p. 13) and Episode 27.
    19. World Trigger Manga and Anime Vol. 12 Chapter 102 (p. 16-17) and Episode 46.
    20. World Trigger Manga and Anime Vol. 22 Chapter 189 (p. 10) and Episode 97.
    21. 21.0 21.1 World Trigger Manga and Anime Vol. 13 Chapter 107 (p. 8) and Episode 66.
    22. Daisuke Ashihara: Mid-Range shooting triggers. Consumes Trion to propel bullets, so they're less powerful than blaes. Consumes more Trion overall.
      Source: Gunner Triggers, Volume 4
    23. World Trigger Manga and Anime Vol. 14 Chapter 119 (p. 5) and Episode 72.
    24. 24.0 24.1 24.2 24.3 World Trigger Manga and Anime Vol. 12 Chapter 100 (p. 6) and Episode 46.
    25. World Trigger Manga and Anime Vol. 12 Chapter 101 (p. 7-9) and Episode 46.
    26. Daisuke Ashihara: Q: Please tell us if there are any other composite bullets besides Tomahawk, and Gimlet.
      A: There are ones like Meteor + Hound's "Salamander", Asteroid + Viper's "Cobra", Hound + Hound's "Hornet" etc.
      Source: Border Briefing File, Page 304, Question 143
    27. World Trigger Manga and Anime Vol. 12 Chapter 100 (p. 8-9) and Episode 46.
    28. World Trigger MangaBorder Briefing File
    29. World Trigger Manga and Anime Vol. 22 Chapter 188 (p. 14) and Episode 97.
    30. Daisuke Ashihara: Q: Are there any branches besides Tamakoma and Suzunari?
      A: Border has 6 branches: Tamakoma, Suzunari, Wataayu (綿(わた)(あゆ) ?), Yumite District ((ゆみ)()(まち) ?), Hayanuma ((はや)(ぬま) ?), and Kuma (()() ?). Its personnel are mostly those who prioritise work or school and don’t aim for A-Rank (they do not participate in the twice a week Rank Wars). The branches are placed on the outer edge of the Forbidden Zone. Other than Tamakoma, the branches function as a point of contact for local residents.
      Source: Volume 18, Question Corner 11

    Navigation[edit | edit source]

    Border Triggers
    Basic Equipment Bail OutRadarTrion Body
    Gunner AsteroidCobraGimletHornetHoundMeteorSalamanderTomahawkViper
    Sniper EgretIbisLightning
    Trap Switchbox
    Prototypes ConnectorDummy BeaconFull ArmsGeistIdatenMakōTeleporterTimer
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