Nullifier Crewman

The Nullifier Crewman is a Corpus Sniper Crewman that carries a power pack on its back. When alerted to a hostile presence, a Projector Drone is deployed from the pack that generates an energy field beneath it. The spherical field not only prevents projectiles from entering (similar to Frost's Snow Globe), but also dispels any present buffs as soon as players enter it. The field also prevents any abilities from being cast within its radius and destroys most powers in its radius.
Firing at the globe causes it to gradually shrink and eventually dissipate altogether, forcing the drone back into the pack, from where it will re-emerge after a brief period. The Projector Drone itself resides at all times outside the field, orbiting above the Crewman, and destroying it permanently removes the Crewman's ability to project the barrier.
==Farming Locations==
These are based on opinions and may not be 100% true. These should be viewed as advice for finding the enemies until better facts are proven.
;Normal Nullifier Crewman
==Tactics==
*Nullifier bubbles use the following mechanic to determine damage dealt to it:
**Nullifier bubbles have a minimum and maximum damage per shot dealt to it – 100 damage at minimum, and 400 damage maximum. Any hit that deals less than 100 damage will be buffed to that amount, while any shot that deals more than 400 damage will be nerfed to that amount. The buffed/nerfed damage values are displayed by the damage indicator.
***If the attack deals damage, the Nullifier bubble takes 300 - 1200 damage instead.
**The damage dealt is then altered by the Nullifier bubble's shrink rate per shot, which is 6% of its current size.
**The formula for determining damage to the Nullifier bubble is: .
***Example A: A hits the bubble for 18 damage. Since the bubble can only receive a minimum of 100 damage, the bubble takes 100 damage from that hit. The damage (100) is then divided by 100, which equals 1.0. This value is then multiplied by the shrink rate of 6% (0.06), giving a value of 0.06, which results in the bubble being reduced by 6% of its current size.
***Example B: An hits the bubble for 500 damage. Since the bubble can only receive a maximum of 400 damage, the bubble only takes 400 damage from the shot. The calculation is thus: , hence the bubble will shrink by 24% of its current size.
**The rate of shrinkage is based off the current size of the bubble.
**Hits are calculated per frame (frame rate), and not for each individual pellet within a shot, i.e. a shotgun that shoots 6 pellets dealing 100 damage each for a total of 600 damage is considered as dealing 600 damage, and thus will have its damage nerfed to 400, resulting in a 24% reduction in bubbles.
*Due to the Nullifier field having Object health property which nullifies Critical Hit damage, weapons that heavily depend on crits such as , or can be less effective against it if the non-critical dps value is too low. 
**However, the Projector Drone orbiting above the Crewman is vulnerable to Critical damage, and therefore one is advised to aim for it with weapons relying on crits.
*The drone is located near the top of the Nullifier's facing side, and can hide itself on the opposite end of the barrier dome respective to the player if the Nullifier is running/facing away.
*Being a sniper unit, Nullifiers are far less accurate up close, but get more accurate at medium and long ranges.
*Splash damage from explosive weapons and powers originating outside the field are nullified, dealing no damage to anything inside, and each explosion counting as only a single hit to the field. A direct hit from the alternate-fire projectile of a Stahlta will actually bounce off the field and get deflected elsewhere.
*The energy sphere will remove any buffs active on Warframes caught inside it, and will render the Nullifier immune to direct targeting by all Warframe powers, including AoE and indirect powers. The sphere can also deactivate Guard Mode of a Voidrig. However, while inside the sphere the Nullifier Crewman will have no protection against weapon attacks, and Warframes can walk through the field at will.
*Despite being a Sniper Crewman, the Nullifier Crewmen's behavior is a bit different; they will not attempt to bash enemies who get too close, and much like Arctic Eximus they will not attempt to take cover or run away. Nearby allies will also head inside the Nullifier Crewman's sphere, making it harder to kill them.
*Nullifier fields absorb hitscan projectiles and deflect physical projectiles. 
**Certain ability projectiles (e.g. the projectiles) can home in on the Nullifier, but if the bubble is present then they will bounce off of it like normal projectiles.
*Due to the field having object health, weapons with very large clips, base damage and fast fire rate are most effective at dealing with Nullifiers.
*Using a with the mod can sometimes instantly and permanently destroy the bubble.
==Notes==
*While they can be when their bubbles are down, they will dispel the control when the bubble resumes, regardless of the fact that the Nullifier is now allied and should revert his bubble to dispel enemy powers instead.
*Originally, Nullifiers would simply ignore Warframe powers, which was more reasonable in most players' eyes. But they were changed to destroy all abilities on contact, despite some powers becoming physical objects like or .
*Even augments like are nullified; the frozen path is destroyed wherever a Nullifier bubble touches.
*All of 's powers are nullified as well, but only if the Nullifier bubble touches the grenade.
*If a Nullifier spawns as an Arctic Eximus, It is possible for them to deploy both Snow Globe and their regular Nullifier bubble.
*Attacking the bubble will alert the Nullifier.
*Bubbles can erode mutation stacks when inside.
*'s can damage the Nullfier's bubbles, despite being an ability.
*Immune to , , and effects while bubble is active.
==Variants==
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==Tips==
*Nullifiers deactivate their bubbles when not alerted.
*The Nullifier's bubbles can be destroyed by melee attacks if they connect on the edge of its radius, which can be utilized by abilities like 's , 's , and 's (especially if paired with the mod) as well as by 
**'s .
*'s and 's augments can instantly destroy nullifier fields.
*The minimum amount of regular shots required to break a regular Nullfield is 6 shots and the minimum time to do so is ~1.5 seconds.
**The maximum damage a shot can deal to a Nullfield is 1200, therefore it must be assumed that a regular Nullfield itself has at most . Hence dealing more than will not benefit dealt DPS further. A Nullfield receives a minimum of 300 and a maximum of 1200 damage per shot. To burst it apart with a maximum effective DPS within the minimum time lapse given, a fire rate of at least is required if the damage per shot exceeds 1200. Shots below 300 damage requires at least . Multishots shall be counted in if given.
**If the damage per shot is in between those thresholds, the necessary fire rate against a regular Nullfield can be broadly calculated by this formula: .
**Take care of not using critical hit multipliers in the above formula.
**Note that certain beam-weapons like , or have different properties when it comes to fire rate and damage per shot. The former for example has a ramped damage output (in the manner of Aksomati's ramping ammo spool).
==Trivia==
*Nullifier Crewmen seem to wear the same uniform that The Sergeant wears, albeit with yellow chest straps rather than white ones.
*Oddly, the Codex image of Nullifier Crewmen seems to represent a standard Crewman with a black uniform and a jetpack used by the three Ranger variants in Archwing missions, whilst the in-game model has an additional helmet extension and a unique "core" pack on its back.
*When summoned from , their bubbles will be the caster's energy color.
*A variant of the Nullifier Crewman can appear as a Capture target, the Nullifier Target.
*Despite using a Lanka which is based, it deals mostly damage as shown by .
==Media==
Nullifier_Crewman.jpg|Nullifier Crewman shown in the codex
DescriptionLiesNormal.jpeg|Showing that Nullifier crewmen can be controlled, despite their description 
==Patch History==
==See also==
*Corrupted Nullifier, a Corrupted version found in the Void.
es:Tripulante Anulador
fr:Homme d'Équipage Zéro
Category:Corpus
Category:Enemies
Category:Update 15
ru:Нуллификатор Корпуса
uk:Рядовий-нуліфікатор