MOAs are terrain-restricted companions that can use ranged weapons or perform melee attacks. There are currently 4 MOA Models.
The Corpus-built MOA is the face of their robotic combat forces seen all throughout the Origin System. Their ubiquity means that several models of MOA are available for use by anyone, including Solaris United and by extension the Tenno. The merchant Legs found in Fortuna sells MOAs that Tenno can use as pets to assist them in missions.
As Companions, MOAs are unique in that they are built as a modular system, with players able to select from various combinations of four different components to create MOAs with stats and abilities to their liking. Once built, a MOA takes up one slot in the Robotic inventory. They can equip Robotic weapons, but do not come with their own weapon unlike Sentinels.
Similar to Kubrows and Kavats, MOAs can be given custom names for further personalization, once they are gilded, as well as being able to be revived once downed.
A MOA companion needs four different components to be built, the Model, the Core, the Gyro, and the Bracket. Each component type has several options to choose from, allowing to customize stats and the MOA's type and appearance.
The MOA's Model forms the machine's head, which acts as its gun turret when equipped with a Robotic weapon, and is the component that earns Mastery Rank points for the MOA after gilding. Each Model grants two unique Precept mods which can only be provided by that particular Model, though the Precepts can be used on any MOA once acquired. A maximum of two MOA-specific precepts can be equipped at the same time.
The Core determines the appearance of the MOA's rear, and modifies the base stats of the MOA.
The Gyro determines the appearance of the MOA's front, and modifies the base stats of the MOA.
Brackets refer to the MOA's legs, and determines the Mod Polarities that the MOA will have. All Brackets have four 
polarities, with no other polarities on Drimper Bracket, and one additional polarity on Gauth (
), Hona (), Jonsin (
), and Tian (
) Brackets.
Before players can craft a MOA, they must first purchase the blueprints for the parts they desire from Legs, which are available for Standing, after which these parts must then be constructed at the Foundry. It should be noted that unlike other Modular items such as Kitguns and Zaws, MOA parts take 24 Hours to craft as opposed to the one hour for all Kitgun/Zaw parts, and the One Minute for Predasite/Vulaphyla companion “components”.
Once the component parts have been crafted, players must return to Legs and select the Configure a MOA Companion option. Here, players must choose from the crafted components they have available to form the MOA. Once a Model, Core, Gyro, and Bracket are selected, the player will be shown a preview of the MOA's appearance, along with the MOA's stats. If the MOA is satisfactory, players can then proceed with the Build MOA action, which will instantly craft the MOA for 
4,000. Players can also use the Configure screen to preview builds of MOA components they do not yet own.
A newly built MOA cannot be renamed, customized, Polarized, equipped with a Focus Lens, or earn Mastery Rank experience. However, they can be equipped with an Orokin Reactor.
Once built, a MOA cannot be disassembled to return its components parts.
In order to fully unlock all of a MOA's features, players must gild their MOA. To gild a MOA, players must have a reputation rank of at least Doer with Solaris United, and the desired MOA must first be leveled up to Rank 30. Afterwards, players must return to Legs and select the Gild option under Other Services, which will cost 10 
Training Debt-Bonds and 
5,000. Upon gilding the MOA, players will be asked to first add a Polarity to the MOA, and then finally give it a custom name. This process will reset the MOA's level back to Rank 0.
A Gilded MOA will have all of the functionality available to other companions. A MOA will only give Mastery Rank points once gilded.
Update 36.0 (2024-06-18)
- Fixed modular weapons in their respective screens (Moas) being highlighted with the Ally Highlights setting enabled.
Update 35.0 (2023-12-13)
- Updated the Daily Special purchase message at Legs to indicate that Moas use Sentinel Weapons. It will now indicate if a player does not own a Sentinel Weapon to use with their new Moa.
- “You do not own any compatible weapons for this Moa. Moas share ranged weapons with Sentinels, these weapons are included when Sentinels are purchased or built in the Foundry. Are you sure you want to purchase this Moa?”
Hotfix 34.0.7 (2023-11-02)
- Fixed MOA Companions permanently dying if they were ragdolled a certain way.
Hotfix 34.0.4 (2023-10-24)
- Added a warning message if you attempt to buy the "Today's Special" MOA Companion but you don't own any weapons that it could use.
Update 34.0 (2023-10-18)
- COMPANION REWORK (PHASE 1)
This section covers the following topics (in order):
- Companion Immortality
- Companion Stat Changes
- Companion Healing
- Companion Mod Changes & Additions
- And more!
Your furry, robotic, fleshy, and everything in between pals have received a rework! Read on to learn how the way you use, Mod, and interact with your Companions has changed in this first phase of the Companion system overhaul.
Our high-level objectives for this Companion rework are:
1. Make Companions more viable in high-level gameplay by making them immortal.
Companions can no longer die! This avoids frustrating scenarios where you are relying on your Companion to provide some feature or bonus only to have them get removed from play. The base stats of Companions have also been increased significantly to help them in difficult missions.
2. Introduce more interactive Mods that offer ways to play alongside your Companion instead of it being mostly autonomous like a specter.
3. Changes to many Companion Mods, mostly to support the first two goals of removing death states and improving basic survivability.
Some Mods were inconsistent in their naming or stats, and we have improved this. We have rebalanced some Mods that players felt were not good enough, or ones that we've observed are SO good that they are considered "essential."
- COMPANION IMMORTALITY
We've all seen the memes with people giving their Companions funny names, only to see the message over and over every few minutes: "Your Companion is down!" Dying Kavats and Kubrows have been demanding attention on your HUD, and spontaneously combusting Sentinels have been robbing you of your Vacuum and Animal Instinct for years.
All that changes with this update. Going forward, Companions will still have Health and Shield values, and they can be knocked out, but they will not die if you fail to revive them. When they reach zero Health, Companions will instead become Incapacitated for a base duration of 60 seconds. All Companions will automatically revive at the end of their Incapacitate period, and there is no limit to the number of times this can happen. Upon reviving all Companions have 5 seconds of invulnerability to get back on their feet safely!
Here are the specifics to how each Companion behaves while Incapacitation:
- MOAs will now collapse on the ground and can be, optionally, manually revived to get them back into action quicker.
- Worth noting that Vacuum and Animal Instinct work while the Companion is Incapacitated.
- With Incapacitation, Companions can now recover from being downed in Arbitration missions, instead of staying dead for the duration of the mission.
Several Mods have been modified or introduced that also change when or how your Companion deals with Incapacitation - see the “Companion Mod Changes & Additions” section below for specifics.
- COMPANION STAT CHANGES
Two broad changes have been made with regard to your Companion's base stats to increase their staying power:
1. Health, Shields and Armor have been refactored across the board.
This simple numeric buff was made with the goal of increasing Companion survivability. This also means that the choice of whether to use, for example, Enhanced Vitality or Linked Vitality, will depend on your Warframe choice instead of the Linked Mod always being strictly superior.
2. Non-Sentinel Companions now gain their full Health and Shield values immediately when you acquire them.
Historically Health and Shield values would increase as your Companion ranked up, which you could see as "Rank Bonuses" in the Upgrades screen. We've removed this behavior and simply given Companions what would end up being their Rank 30 values at Rank 0. This should let you immediately take your Companions on more difficult missions after earning them!
Revised MOA Stats (all types):
- 350 Health (from 100), 350 Shield (from 100), 350 Armor (from 100)
- MOA base stats can be modified further by their components and via Gilding
- CONSISTENCY IN COMPANION HEALING
Previously, the Mod “Link Health” could cause your Companions to gain some of the healing that your Warframe did. This invisible feature was not indicated by the card, and it was never explained what forms of healing worked or why. Additionally, Companions were using some of the same mechanics that things like mission objectives did, which limited the effects of some healing or defensive powers. We've decided to remove both of these obscure mechanics and restrictions.
Companions will no longer gain Health when your Warframe does if using certain Health-absorbing powers together with the Mod “Link Vitality” (formerly Link Health). The restrictions of the following abilities and features, as they apply to granting Health, Shields, or Damage Resistance to Companions have been removed:
- Nezha’s Warding Halo
- Trinity’s Blessing
- Ember’s Immolation
- Garuda’s Blood Altar
- Gara’s Splinter Storm
- Styanax’ Intrepid Stand
- Mirage’s Eclipse
- Volt’s Discharge
- Baruuk’s Desolate Hands
- Harrow’s Penance
- Harrow’s Thurible
- Equinox’ Mend & Maim
- Sancti Magistar’s Heavy Attack Heal
- Vazarin’s Protective Sling
- COMPANION MOD CHANGES & ADDITIONS
Changes To Existing Mods
Several Mods have been modified to interact with how your Companion deals with Incapacitation.
Stats below are shown at Max Rank.
Sentinel Survivability Mod Changes:
- Calculated Redirection changed from max 275% Shields to max 250% Shields
- Enhanced Vitality changed from max 220% Health to max 250% Health
- Metal Fiber changed from max 110% Armor to max 250% Armor
Companion Survivability Mod Changes:
- Link Health has been renamed to Link Vitality, and changed from max 165% of your Warframe's Health shared with Companion, to max 125% shared Health.
- Link Shields has been renamed to Link Redirection, and changed from max 110% of your Warframe's Shield shared with Companion, to max 125% shared Shield.
- Link Armor has been renamed to Link Fiber, and changed from max 110% of your Warframe's Armor shared with Companion, to max 125% shared Armor.
- Medi-Pet Kit has been changed from providing your Companion with 6 Health per second and 72% Bleedout Reduction, to providing 12 Health per second and reducing Incapacitation time by 15 seconds.
- Accelerated Deflection (+90% Shield Recharge) has been changed from being only equipped on Sentinels, to the Robotic category, which means it is now also compatible with MOAs. Additionally, it also provides -45% Shield Recharge Delay.
Other Companion Mod Changes:
- Pack Leader has been changed. Instead of healing your Companion by 36% of melee damage inflicted, it now restores 100 Health per melee hit. Excess healing becomes Overguard instead, with a maximum of 1200 Overguard.
- Primed Pack Leader increases Pack Leader effect to 183 Health restored per hit, and increases Overguard cap to 2200.
- Pack Leader's healing was so strong that, functionally, any upgraded melee weapon would fully heal your Companion in a single hit. You would hit an enemy for several thousand damage, and your Companion would proportionately receive thousands of Health. This change tries to make the healing values more sensible so that you can heal your Companion efficiently but not *instantly*. By letting you overflow into Overguard, it also provides some extra ability to tank large hits.
- Loyal Companion has been reworked entirely. Formerly it provided a 90% Bleedout-Link so that your Companion had a longer period of time where it could be revived. Since Companion death is no longer a factor: Loyal Companion applies 75% Damage Resistance to your Warframe for 10 seconds, and causes your Companion to become invulnerable and taunt enemies to draw fire to itself for 30 seconds, if your Warframe falls below 35% Health. There is a 60-second cooldown between activations.
- (Parazon) Hard Reset: Changed from instantly reviving your Companion if you achieved 3 Mercy Kills within 40 seconds, to reducing your Companion's Incapacitation time by 15 seconds on each Mercy Kill.
- We found that this was fairly difficult to achieve. Changing it to allow incremental progress makes it more reliably beneficial to use this.
- New Companion Mods
Referring back to the introduction, one of our goals with the Companion rework is to add opportunities for the player to work together with the Companion. Instead of a Mod that only affects your Companion, we looked for ways that you and your Companion could amplify each other.
The following new Mods aim to do just that!
These Mods are available to acquire at the Conservation vendors in Cetus (Master Teasonai), Fortuna (The Business), and the Necralisk (Son).
*Stats below are shown at Max Rank.
Available In Master Teasonai’s Offerings (Cetus):
Tandem Bond
Companion melee hits increase your combo by 6. Heavy Attacks increase Companion melee damage by 30% of melee damage multiplied by your combo multiplier for 30s.
Covert Bond
Finisher and Mercy Kills grant your Companion 10s of stealth that attacks will not disrupt, up to 60s.
Mystic Bond
After your Companion uses Abilities with cooldowns 5 times, you may cast a Warframe Ability without expending Energy.
Restorative Bond
Health Orbs restore 60 more Health and reduce Companion Recovery by 3s.
Manifold Bond (Robotic)*
Companion Precept Mods apply Status Effects from Companion weapons. Killing enemies with 3 or more unique Status Effects reduces Companion Ability cooldowns by 3s.
*Work is still ongoing for this mod, we are aware of some Robotic Companion Precepts which do not trigger the bonus Status Effects.
Available In The Business’ Offerings (Fortuna):
Aerial Bond
Airborne kills decrease Companion Recovery timer by 3s and 9s for headshot kills. Companion creates a field of Cold that increases up to 35% Status chance and 10m radius while Warframe is airborne, lasting for 3s after returning to the ground.
Astral Bond
Damage dealt by Operator or Drifter grants 120% Void damage to your Companion’s attacks for 10s. Companion Void damage adds +30% Amp and Energy Efficiency to Operator or Drifter for 5s.
Momentous Bond
Killing Eximus enemies grants 120% bonus of a random Elemental Damage to your Companion for 30s and reduces Companion Recovery by 12s.
Reinforced Bond
If the Companion exceeds 1200 maximum shields or Overshields, then your fire rate is increased by 60%. Reloading restores 150 Overshields to your Companion.
Tenacious Bond
Headshot kills reduce Companion Recovery timer by 3s. If the Companion’s Critical Chance is over 50% then you gain +0.6x Final Critical Damage Multiplier.
Available In Son’s Offerings (Necralisk):
Duplex Bond
Companion will clone itself each time you expend 100 Energy, up to 3 Clones. Clones live for 30s and their kills have a 50% chance of dropping Energy Orbs.
Seismic Bond
While a channeled Ability is active, Companion melee attacks create a 4m shockwave for 30% of their melee damage. Damage dealt by your Companion increases your Ability Efficiency by 3% for 12 seconds. Max 10 stacks.
Vicious Bond
Companion melee attacks strip 15% of enemy armor. Melee attacks on enemies recently damaged by Abilities apply the effect in a 9m radius.
Contagious Bond
When your Companion kills an enemy afflicted with a Status Effect, 50% of the Status Effect spreads to other enemies within 9m.
- FURTHER COMPANION QUALITY-OF-LIFE CHANGES
A few further changes that are worth mentioning:
- The improvement to Shield Gating where it now scales with maximum Shield strength and fully resets as long as you have any Shield charge at all, also applies to Companions.
- Companions can now gain Overguard (behaves the same as player Overguard) and Overshield.
- Added map icons for each Companion type to help identify their location.
- Improved Companion HUD information:
- Removed notifications for when other players’ Companions are downed (Incapacitated) to reduce HUD noise. You will now only get notified for your own Companion.
- Your Companion now has its very own icon in the HUD.
- Oberon's Passive now applies to all Companion Types.
- Previously only Kavats, Kubrows, Predasites, and Vulpaphylas would receive +25% Health, Armor, and Shield links, plus the 1 instant revive per mission.
- Companions are no longer able to be staggered!
- Because staggering would often stop your pets in-place, it opened them up to being re-staggered, which then often led to their swift demise. This should fix that issue, and allow your furry and not-so-furry friends to have more impact in-mission.
- General Fixes:
- Fixed the Emotion Module preview diorama for MOA companions applying their animations to the equipped Corpus Hound, creating a MOA/Hound creature of nightmares.
- Fixes towards Companion MOAs with Security Override being unable to hack certain terminals in Jupiter Spy missions, resulting in pathing issues.
Update 33.6 (2023-07-27)
- Modular Components that can earn Mastery will now show if that component is Mastered when viewed in a Vendor Menu (ex: viewing Zaw Strikes at Hok).
Update 32.0 (2022-09-07)
- GILDING CHANGES
As mentioned on Devstream #163, we have made changes to the Gilding system to make it easier to access the full power of your Modular items earlier on in-game. For those players that have just completed the Second Dream and are looking to craft a more powerful Amp to help you into and beyond The New War - these changes are for you!
Instead of upon Gilding, modular weapons will now have their full stats available upon ranking up to Level 30. Gilding your Modular weapon now serves the purpose of allowing it to earn Mastery and unlock customization. This allows players to have access to more powerful gear without needing to fully level and earn Standing for the respective Syndicates!
Update 30.5 (2021-07-06)
- Players can now install an Orokin Reactor onto ungilded Modular items
- Being unable to install a Reactor or Catalyst onto an ungilded modular item significantly slowed down progression on new Modular items. Players who were willing to make the investment into Modular items weren’t able to Mod them to their full capacity, which left their new gear feeling very underpowered. So we have removed that restriction!
- Fixed ‘Preview Gilded’ not showing correct colors/textures for MOA companions at Legs in Fortuna.
Hotfix 30.3.2 (2021-05-27)
- Fixed a script error when changing a MOA Companion’s Emotion Module.
Update 29.5 (2020-11-19)
- Fixed a case of Companions Moas spawning in the Arsenal floor and then falling when equipped.
Hotfix 29.1.2 (2020-09-22)
- Fixed some Sentinel and Moa Weapon types not getting affected by Magazine related Mods (notably Helstrum).
Hotfix 28.0.6 (2020-06-24)
- Fixed your Moa Companion not gaining weapon Affinity if Hard Engage was the last thing the moa activated before extracting from the mission.
Hotfix 28.0.5 (2020-06-17)
- Made improvements towards color customization on the new Melee Moa Companion. This fixes your color customization barely affecting the Moa.
- Fixed inability to Chat link the new Melee Moa parts.
- Fixed Nychus Moa description having old Precept names.
- Now reads: "This model is built for close-quarters combat, using the Blast Shield and Hard Engage precepts."
Hotfix 28.0.2 (2020-06-11)
- Fixed the Moa "Drimper Bracket" using the same model as the new "Hona Bracket" when viewed in Legs’ Shop.
Hotfix 28.0.1 (2020-06-11)
- Fixed Companion Moa’s appearing to flash red when shot at.
Update 28.0 (2020-06-11)
- NEW MOA COMPANION
Visit Legs in Fortuna to configure the newest Melee Moa Companion inspired by Rocky -- both in animation, and in sound design.
- NYCHUS MOA (Model)
This model is built for utility, using the Isolating Charge and Hard Engage precepts.
- LEHAN CORE
This core features enhanced Armor and Health, with standard Shields.
- TYLI GYRO
A system that redirects power from one defensive subroutine to streamline efficiency in others.
- HONA BRACKET
A versatile bracket featuring a Mod slot with a Naramon polarity.
- HELSTRUM WEAPON
Launches a swarm of micro-missiles.
- NEW MOA EMOTION MODULE
- TENACIOUS
A tenacious emotion that pulls inspiration from boxing animations! Did someone order a piping hot TKO?!
*Check out the in-game Market for this new Moa Companion Emotion Module!
- General Changes
- Improved Companion Moa parkour movements when attempting to follow/catch up with its owner.
Hotfix 27.5.6 (2020-05-26)
- Fixed inability to interact with your MOA Companion in your Orbiter. As reported here: https://forums.warframe.com/topic/1194985-no-petting-moa/
Hotfix 27.3.11 (2020-04-09)
- Fixed Moa pets doing silly short hops when moving really slowly, or fast-walk strides when moving really fast.
Hotfix 27.0.10 (2020-01-11)
- Fixed MOA Companion Emblems being equipped on the wrong side.
Update 25.7 (2019-08-29)
- COMMUNITY CONTEST WINNER ADDITIONS
The MOAnimation Contest’s winning emote by Zeaban works on all MOAs with an Emotion Module installed! Direct a Boast emote at your companion MOA to check out the new reaction.
Hotfix 24.2.12 (2019-01-30)
- Fixed various issues when attempting to Chat link ‘MOA’.
Hotfix 24.2.9 (2019-01-18)
- Fixed MOA Companions attacking enemies that are considered ‘suspicious’ but not yet ‘alarmed’.
Hotfix 24.2.7 (2018-01-09)
- Fixed MOA Companions equipped with the Security Override Mod ability to hack quest-critical objects which result in skipping gameplay stages.
Hotfix 24.2.6 (2018-12-20)
- Fixed being able to 'interact/pet' your MOA Companion even though it’s not visible/equipped.
Hotfix 24.2.3 (2018-12-19)
- Fixed MOA Companions Security Override Precept not turning off radio towers on the Plains of Eidolon.
Hotfix 24.2.2 (2018-12-18)
- MOA Companion vocals are now muted while in the Arsenal.
Hotfix 24.2.1 (2018-12-18)
- Fixed inability to complete Mastery Rank tests (the increased Mastery for K-Drive and Moa-Pets was not being included).
Update 24.2 (2018-12-18)
- Titania's Tribute: Fullmoon - the 75% damage buff now applies to ALL (Sentinels, Moas, Companions) + Razorwing *Butterflies
- Improvements towards MOA Companion jogging animations.
- Updated MOA Companion disarm animations to appear less humanoid.
- Fixed MOA Companions and K-Drives only giving 3000 Mastery as opposed to the correct 6000 Mastery. The missing *Mastery will be retroactively added on login.
- Fixed being prompted to purchase more Sentinel Slots if you only have 1 empty when crafting a new MOA Companion at Legs.
- Fixed hearing MOA Companion footsteps in the Orbiter regardless of it being in view as reported here
- Fixed the camera not following the MOA Companion’s idle animation in the Arsenal.
- (Undocumented) Added Gauth, Jonsin and Tian Brackets.
Hotfix 24.1.3.2 (2018-12-06)
- Fixed Pet Moa's equipped weapons not gaining shared affinity.
Hotfix 24.1.2 (2018-11-29)
- Chat will now autocomplete when attempting to link a Zaw, MOA Companion, K-Drive, and Kitgun.
- Fixed custom MOA Companion names not appearing in mission for Clients.
- Potential fix for script error causing the MOA Companion Anti-Grav Mine Precept to send enemies too high into the sky.
Update 24.1 (2018-11-22)
- Increased the frequency at which your MOA Companion will use the Whiplash Mine and Anti-Grav Grenade Precepts.
Hotfix 24.0.10 (2018-11-21)
- Fixed a potential crash related to MOA Companions.
- Fixed MOA Companions not being recognized as a Pet for Riven challenges requiring an active Pet.
Hotfix 24.0.9 (2018-11-21)
- Increased the speed at which MOAs/Kubrows/Kavats attempt to catch up to you from far distances.
- You can no longer do a Cipher hack if a MOA Companion is already working on it.
- Fixed certain MOA Companion parts not turning invisible when cloaked with a Warframe ability (i.e. Loki’s Invisibility, Ash’s Smokescreen, etc).
Hotfix 24.0.7 (2018-11-15)
- MOA Companions now have a custom warp teleport FX/sound when teleporting closer to you.
- Fixed the MOA Companion trying to shoot at non-visible targets.
- Fixed the MOA Companion Security Override Precept (Oloro Model) not functioning sometimes.
- Fixed the MOA Companion Tractor Beam Precept (Oloro Model) not alarming enemies.
- Fixed MOA Companions sometimes not responding after using the Security Override Mod.
Hotfix 24.0.2 (2018-11-09)
- The Zaw Foundry category is now the ‘Modular Weapon’ category. It includes Zaws, K-Drive, Kitguns, Moa and Amp parts.
- Reduced the crafting cost of each Moa Part from 500,000 to 50,000 Credits.
Update 24.0 (2018-11-08)
- The ‘SENTINEL’ Inventory category has been renamed to ‘ROBOTICS’ to welcome the new MOA Companions.
- Legs also offers new Robotics weapons that can be used by both Moas and Sentinels:
- Cryotra: Emits a ray of sub-zero energy.
- Tazicor: Burst rifle that fires electrified rounds.
- Vulcax: Charges up a powerful blast of ultra-heated plasma.
- Meet Legs, the Moa constructor! At Legs’ Pets & Parts, Tenno can assemble, customize, and name new Moa friends.
- Introduced.