For the Grineer counterpart, see Kuva Lich.

For the Infested counterpart, see Technocyte Coda.

The Sisters of Parvos are Corpus super soldiers that work under Parvos Granum. Sought out as Candidates by Vala Glarios, the Sisters seek to fulfill Parvos's desire in having a reliable sibling, and are armed with advanced Tenet weaponry and Hound companions.

Acting as an Adversary to the individual Tenno whose actions in battle have caused them to rise, Sisters establish a foothold in the Star Chart. From there, they hinder the progress of the Tenno, seizing a large portion of credits gained from missions. Their powers, bestowed upon them by Parvos' technology, grant them invincibility in battle that can only be broken by the Tenno who they are bound to - by discovering a sequence of enigmatic phrases inscribed on Requiem Mods, which the Tenno must unearth and apply to their Parazon in corresponding order, thus being able to purify and permanently break the Sister's security encryption. Every Sister has a unique name and various properties.

Creation[]

After the completion of The War Within and Call of the Tempestarii quests, as well as obtaining Mastery Rank 5, the player may encounter a Candidate after completing the Granum Void in any Corpus Ship tileset while qualifying for Rank 1 rewards of Nightmare Difficulty (using a  Zenith Granum Crown; not to be confused with Nightmare Mode which is a different mission modifier). This can be done before or after completing the mission's main objective.

By choosing to kill the Sister Candidate with a Parazon Mercy kill, the player causes a Sister to rise in the Origin System, thus becoming the Progenitor of that Sister, and the Warframe used for this is recognized as the Progenitor Warframe. In a squad, only the last player who damaged the Candidate may perform the Mercy kill. If no one takes the mercy action, the Candidate will despawn after 30 seconds. This does not interrupt the normal course of the mission. Upon return to the Orbiter, regardless of whether the mission was completed or aborted, the player will receive communications from the newly created Sister. The Sister's profile can be accessed from either the Orbiter's Navigation console, or on the Main Menu, through a banner on the lower right corner of the screen.

Players cannot Mercy the Candidate if they already have an active Sister or Kuva Lich. A Candidate can still spawn if any member of the squad already has an active Sister/Lich, or has not met the quest prerequisites to spawn one. Should a Candidate be downed by a player who has not completed the quest prerequisites, the Candidate will immediately die without a Mercy prompt.

When the player is within Mercy distance, the downed Candidate will display an icon and name of the Tenet Weapon the created Sister will wield. The displayed weapon is always random, meaning players can run a mission multiple times before Mercy killing her with their weapon of choice. If the Candidate is ignored, the displayed weapon will not show up again for any subsequent Candidates (only if the mission is finished properly) until the entire weapon pool is rejected.

As an added challenge, Sister Candidates may flee and despawn if not caught in time. If they do, this will trigger unique voice lines from Vala Glarios indicating that they have fled (rather than simply turned invisible a la Treasurers). Whilst the timer is fairly generous and Candidates are not particularly challenging to defeat, players are nonetheless advised to prioritize catching the Candidate over all other objectives and enemies, and if hunting as a group then squads should stick together (or at least stay in pairs) to ensure that the path to the Candidate is not blocked by a Co-op Door.

Progenitor Warframe[]

The Warframe who created the Sister will determine the elemental damage bonus that her Tenet Weapon will have, as well as the type of Ephemera should they spawn with one. In addition, it will determine the Sister's Ability kit, and the Sister will typically have complete immunity to damage of her progenitor element.

Element	Progenitor Warframe*
Impact	Baruuk  Dante  Gauss  Grendel  Rhino  Sevagoth  Wukong  Zephyr
Heat	Chroma  Ember  Inaros  Jade  Kullervo  Nezha  Protea  Vauban  Wisp
Cold	Frost  Gara  Hildryn  Revenant  Styanax  Titania  Trinity
Electricity	Banshee  Caliban  Excalibur  Gyre  Limbo  Nova  Valkyr  Volt
Toxin	Atlas  Dagath  Ivara  Khora  Nekros  Nidus  Oberon  Saryn
Magnetic	Citrine  Harrow  Hydroid  Lavos  Mag  Mesa  Xaku  Yareli
Radiation	Ash  Equinox  Garuda  Loki  Mirage  Nyx  Octavia  Qorvex  Voruna

*Note that the Primed or Umbra version of a Warframe share the same element

Personality[]

Sisters can have one of four personalities.^[1] Since Sisters are always female, the personality chosen will be random and not split between sexes like Kuva Liches. These personalities can be described as "Business", "Nervous", "Domineering", and "Folksy".

Tutorial[]

The Sisters of Parvos tutorial summary can be accessed from the "Tutorial" button in the Sisters of Parvos profile.

AN IMMORTAL FOE
You can only defeat this Adversary with the power of mysterious Requiem Mods.

REQUIEMS
Requiem Mods can be acquired from Requiem Relics, found in Kuva Siphons, Thralls & Hounds and Kuva Floods.

MURMURS
Collect Murmurs by defeating [ADVERSARY NAME]'s Thralls (Grineer) or Hounds (Corpus) to learn the Known Requiems.

THE SECRET
Equip the Known Requiems on your Parazon and battle [ADVERSARY NAME] to determine the correct sequence.

TAXES
In regions containing your Adversary's territory, [ADVERSARY NAME] may steal your rewards. Defeating [ADVERSARY NAME] is the only way to recover your losses.

VENGEANCE
Lure [ADVERSARY NAME] out of hiding by defeating Thralls or Hounds in controlled areas.

RAILJACK
Pursue [ADVERSARY NAME] in Railjack once they Flee to the Proxima Regions.

Behavior & Mechanics[]

Star Chart Influence and Reward Tax[]

A Sister increasingly establishes influence across a set of nodes in the system by commanding Mechanized Hounds, which will appear during missions. The Sister will gain influence each time she ranks up, and a node will lose its influence after the player defeats the Sister Controlled Territory mission there. Clearing influence from nodes on the Star Chart will cause the Sister to take control of new planets.

Influence serves to diminish the player's rewards for completing missions in the affected nodes as a part of the reward will be claimed by the Sister through a Reward Tax in form of Credits. As the number of nodes under influence increases, the Reward Tax will also increase (roughly 0.7% per node). Credits that the player has lost through Reward Tax will only be reclaimed after they have defeated the Sister.

• A Sister that has retreated to their Railjack confrontation node in Neptune Proxima will continue stealing Credits from normal Neptune starchart missions until the player defeats them.

Rage Meter[]

A rage meter can be seen in the Sister Profile page, representing the likelihood that the Sister will appear in the player's missions. The 'angrier' the Sister, the more likely the player will encounter her. Only killing mechanized hounds in nodes occupied by the player's Sister will further anger the Sister and increase the meter. Occupied node mission completion and killing mechanized hounds in different Sister nodes (via taxi) will not increase the Sister's anger, although the latter will still progress the murmur. There are five levels of anger: Indifferent → Annoyed → Fuming → Furious → Enraged. The meter will reset every time the Sister levels up, except for the final level of 5.

Using a Requiem Ultimatum can instantly spawn the player's Sister regardless of rage meter level.

Level[]

Sister Level	Enemy Level on Controlled Nodes	Region
1	55-75	Venus
2	50-60	Phobos
3	55-70	Jupiter
4	75-90	Neptune
5	90-110	Pluto

Newly created Sisters start at Level 1, indicated above her name in her profile page. As the player progressively fills the Sister's rage meter they will eventually encounter the Sister in combat during a mission. If the player fails a Mercy attack at any point during the fight, the Sister will be staggered, swearing vengeance towards the player. After doing so, the Sister will despawn, though not before increasing in level by one. As a Sister increases in level, so too does the level of missions under her influence. A Sister can reach a maximum level of 5. Sisters may gain additional resistances and immunities upon leveling up.

Abilities/Attacks[]

Sisters have four unique Abilities, three of them are variants of existing Warframe Abilities and one is a movement Ability. The first three Abilities that they possess depend on the Element associated with the Progenitor Warframe that summoned the Sister. Regardless of the Progenitor Warframe, the fourth Ability can be one of the following four abilities: Lurch, Stampede, Teleport, or Vault.

As Corpus units, Sisters have very high natural shield regeneration and low regeneration delay.

Sisters start out with their first Ability and fourth movement Ability; they will gain access to their second and third Abilities at levels 2 and 3 respectively similar to how Warframes gain access to their Abilities when ranking up.

Element	Ability 1	Ability 2	Ability 3	Ability 4
Impact	Overload ( Smite)	Cursed Ground ( Hallowed Ground)	Blaze Artillery ( Blaze Artillery)	Lurch, Stampede, Teleport, or Vault
Heat	Fireball ( Fireball)	Spectral Scream ( Spectral Scream)	Warding Halo ( Warding Halo)
Cold	Balefire ( Balefire)	Undertow ( Undertow)	Snow Globe ( Snow Globe)
Electricity	Null Star ( Null Star)	Radial Blind ( Radial Blind)	Electric Shield ( Electric Shield)
Toxin	Molt ( Molt)	Renewal ( Renewal)	Prowl ( Prowl)
Magnetic	Rhino Stomp ( Rhino Stomp)	Tectonics ( Tectonics)	Soul Punch ( Soul Punch)
Radiation	Magnetic Snare ( Magnetize)	Polarize ( Polarize)	Ensnare ( Ensnare)

Mechanized Hound[]

A Sister does not maintain her territory on her own. Aside from enlisting the aid of Corpus troops and proxies, she also has Hounds that assist her conquest. In addition to having Robotic, Alloy Armor, and Proto Shield health types, they receive 25% less damage,  Toxin does not bypass their shields, and receive up to a maximum of 4 stacks of any Status Effect. On creation of the Sister, the Hound's components (Model, Core, Bracket, and Stabilizer) are randomly generated, possessing unique precepts depending on their modular parts.

All hounds have a 5% chance of dropping a Requiem Relic.^[2][3] Each Requiem Relic has an equal chance to be dropped.

Spawning Mechanics[]

Unlike Kuva Thralls that are normal enemies converted into upgraded units, Hounds are a new type of enemy that spawn in Sister controlled mission nodes. A Hound appearing in a mission will be accompanied by a musical sting and a waypoint marker. The Hounds are aggressive and will often seek out the player regardless of alert status. One Hound will always appear at the start of a mission, with additional Hounds appearing as the player kills enemies. Up to a maximum of 3 Hounds can spawn in a mission naturally.

Sisters that challenge the player also can summon one Hound per health bar (with a 30 second cooldown between summons), regardless of the mission's existing or defeated Hounds. Up to a maximum of 3 Hounds can be spawned in this manner.

Quirk[]

Sisters may rarely spawn with a quirk that provides unique voice-lines and behavior when encountered.

Flavor Text[]

A Sister will spawn with a randomly-generated title that appears beneath their name in their profile. These follow a naming scheme of the following format:

[Adjective/Rank]* [Position] of/for/in charge of [Purpose/Field] ([Division])^

*Can have anywhere from one to four sequentially
^Division is optional; a Sister may or may not have this

Examples of such titles are:

• Creative Manager of Best Practices
• Senior Representative Inspector of Creative Models
• Junior Creative Inspector of Onboarding
• Student Trainee Executive Member for Interdepartmental Mobility
• Principal Head Fiduciary Designer of Dynamics
• Psychological Operations Trainee Creative Passionpreneur in charge of Core Competencies (Marketing)
• Legacy Fiduciary Coordinator of Envisioned Intiatives
• Student Advising Clerk in charge of Certified Thinking (Business Affairs)
• Junior Technical Overseer of Customer Service (Defence)
• Enmeshed Lead Member for Parvosian Acquisition
• Psychological Operations Head Coordinating Architect of Confidential Negotiation (Legal Department)

Requiem Mods[]

Requiem Mods are a special subset of Parazon Mods, each one an enigmatic phrase fragment of a complete Requiem Sequence, thus the only way to permanently sever a Kuva Lich or Sisters of Parvos's Immortality.

Notes[]

• All Sisters of Parvos interactions will be registered in the Codex, under "Sisters of Parvos" in the Universe tab.
  • The ability to rewatch the Sisters of Parvos intro cutscene is present in the Sisters of Parvos History, through the "View Cinematic" button.
• Successfully completing all available Sisters of Parvos mission nodes without failing during the requiem mini-game (or by just ignoring it) will automatically increase the Sister's level and spread their influence to another planet.
• An enemy Sister of Parvos can appear in Ascension after triggering 3 Sister Beacons during the elevator ride. This Sister has a randomly generated name, personality, weapon, and abilities, but only possesses a single health bar and she and her Hound will immediately be defeated upon depleting her health without the need for Mercy. However, she does not drop any traditional adversary loot, such as her weapon, Hound, and Ephemera if any.

Converted Notes[]

• Will always spawn at level 75 (If Rank 5) on Railjack missions and through normal missions with the On-Call feature of Railjack. However, they will have limited scaling when they spawn naturally to assist players who have died at least once, going past level 75 in Steel Path missions.
• Toxin Sisters will almost always use  Molt, then use  Prowl to hide. However, they never move or attack while in prowl and simply stand next to their decoy, which will cause them to still be attacked by stray bullets or AoE. On the Railjack they do the same, limiting their ability to rush to downed human crew members to revive them.
• Radiation Sisters will use  Ensnare somewhat often, which will immobilize entire groups of enemies for a short time, however their Magnetize only lasts a couple seconds and is entirely useless while  Polarize only regenerates a tiny portion of their own shields while temporarily stunning the sister (by raising herself in the air similar to  Mag specters in The Index).
• Cold Sisters will use a mobile version of  Snow Globe similar to Arctic Eximus enemies, but not only will it block allied fire from going through (if the sister is between the player and enemies) but the globe is very weak and will very quickly be dispatched even on low level missions. They will also use a non-damaging version of  Undertow to evade damage for a short time, but on Railjacks this can prove detrimental as they will often hide when crewmembers need to be revived.
  • They will however, attempt to stay close to the player who spawned them in, making the globe somewhat effective at temporarily stopping attacks from reaching them.
• Magnetic Sisters will never create Spectralysts with Soul Punch, despite being able to make one of the player when she is the player's nemesis. This is likely due to Spectralysts being copies of Tenno only, despite the description of the Amalgam Heqet implying it can create Spectralysts of any enemy. This makes the ability largely useless as it has very minor damage.
• Heat based Sister's  Fireball ability travels very slowly, about as slow as a Bombard rocket. As such, it will very often miss any targets not standing still or at near point blank range to the Sister. They will use their  Spectral Scream ability most often, which locks them in place as they deal low damage heat procs to enemies they aim at in a tight cone, and rarely will use  Warding Halo.
• Electric based sisters will use their  Null Star ability the most out of their kit, creating 3 orbiting null stars which presumably give her 15% damage reduction to her health but its very common for them to seek enemies, wasting the DR they could give her. She will use her Radial Blind uncommonly, blinding enemies in a small radius for a few seconds but NOT opening them up for finishers. Finally, she will rarely use her personal  Electric Shield only when damaged enough, which will block most frontal damage and vanish after a few seconds.

Converted Tips[]

Trivia[]

• The Sisters of Parvos were originally known as "Queenpins" prior to Devstream 154 where they were officially dubbed.
• Unlike Kuva Liches, who have the Progenitor's helmet on their shoulder, the Sisters have their hounds project the helmets on top of their heads.
• During the overview video of what was to come in the first half of 2021 in Devstream 150, a  Tenet Envoy wielding Sister was present named "Ladia Cru" who was on board a Corpus Ship in Railjack, serving as the final act of killing a Sister of Parvos.
  • It also noted that originally, the Sisters of Parvos showdown was supposed to be in Pluto Proxima before they decided to move it to Neptune Proxima.
• Sisters of Parvos are voiced by Claire Vousden (Business), Keaton Talmadge (Folksy), Xyta Midnyte (Domineering), and Kyla Ward (Nervous).^[4]
• Unlike Kuva Liches, their abilities in combat do not necessarily reflect the element they are associated with. For example a Sister with  Radiation will instead mostly deal attacks that primarily are associated with  Mag, who is  Magnetic themed.
• A Toxin based Sister with the Cycron will deal  Gas damage, the only current way to gain Gas on Converted Liches or Sisters.
• The Hypatia and Solena Ephemeras have a sound effect when previewing Sisters Of Parvos with it, but has no sounds for the player.
• They are possibly created by extracting the essence of a Parazon-stabbed Candidate, using the information derived from the Warframe who stabbed them to create an enhanced spectral copy of them, possibly similar to Tenno Specters.
• Unlike Liches who will boast then Vaporize out of the map in a red burst when incorrectly stabbed (Being reborn again and possibly gaining new resistances in the process) Sisters will actively attack the Warframe who stabbed them before leaving the mission through teleportation. This seems to imply that while mechanically the same, the flavor of them "leveling up" is different as it does not requiring them to die.

Bugs[]

Media[]

References[]

Collapse Corpus Edit

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CollapseGame System Mechanics Edit
Currencies		Credits •  Orokin Ducats •  Endo •  Platinum •  Aya •  Regal Aya •  Standing
General	Basics	Arsenal • Codex • Daily Tribute • Empyrean • Foundry • Market • Mastery Rank • Nightwave • Orbiter • Player Profile • Reset • Star Chart
	Lore	Alignment • Fragments • Leverian • Quest
	Factions	Corpus • Grineer • Infested • Orokin • Sentient • Syndicates • Tenno
	Social	Chat • Clan • Clan Dojo • Leaderboards • Trading
	Squad	Host Migration • Inactivity Penalty • Matchmaking
	Player Housing	Clan Dojo • Dormizone • Drifter's Camp • Orbiter
Gameplay	Basics	Affinity • Buff & Debuff • Death • Hacking • Invisible • Maneuvers • One-Handed Action • Open World • Pickups • Radar • Stealth • Tile Sets • Void Relic • Waypoint
	Damage Mechanics	Critical Hit • Damage • Damage Redirection • Damage Reduction • Damage Reflection • Damage Type Modifier • Damage Vulnerability • Health • Status Effect
	Enemies	Bosses • Death Mark • Enemy Behavior • Eximus (Overguard) • Lich System
	Mission	Arbitrations • Archon Hunt • Break Narmer • Empyrean • Invasion • Sortie • Tactical Alert • The Circuit • The Steel Path • Void Fissure
	Activities	Captura • Conservation • Fishing • K-Drive Race • Ludoplex • Mining
	PvP	Duel • Conclave (Lunaro) • Frame Fighter
	Other	Gravity • Threat Level
Equipment	Modding and Arcanes	Arcane Enhancements • Archon Shard • Fusion • Mods (Flawed, Riven) • Polarization • Transmutation • Valence Fusion
	Warframe	Attributes (Armor, Energy, Health, Shield, Sprint Speed) • Abilities (Augment, Casting Speed, Helminth System, Passives, Duration, Efficiency, Range, Strength)
	Weapons	Accuracy • Alternate Fire • Ammo • Area of Effect • Attack Speed • Bounce • Critical Hit • Damage Falloff • Exalted Weapon • Fire Rate • Hitscan • Holster • Incarnon • Melee • Multishot • Noise • Projectile • Projectile Speed • Punch Through • Recoil • Reload • Ricochet • Trigger Type • Zoom
	Operator	Amp • Focus (Madurai, Vazarin, Naramon, Unairu, Zenurik) • Lens
	Drifter and Duviri	Decrees • Drifter Combat • Drifter Intrinsics • Kaithe
	Other	Archwing • Companion • K-Drive • Necramech • Parazon • Railjack
Technical	General	AI Director • Drop Tables • HUD • Key Bindings • Material Structures • PBR • Rarity • RNG • Settings • String Interpolation • Text Icons • Upgrade
	Software, Networking, and Services	Cross Platform Play • Cross Platform Save • Dedicated Servers • EE.cfg • EE.log • File Directory • Fonts • Network Architecture • Public Export • Public Test Cluster • Stress Test • Warframe Arsenal Twitch Extension • World State
	Audio	Mandachord • Music • Shawzin • Somachord • Sound
	Mathematical	Calculating Bonuses (Additive Stacking, Multiplicative Stacking) • Condition Overload (Mechanic) • Enemy Level Scaling • Maximization • User Research