An Extraplanetary Multiform Mobile Identifier, or E.M.M.I., is a very powerful Galactic Federation operative robot. A group of them serve as the secondary antagonists of Metroid Dread.


The E.M.M.I. were created from the strongest materials in the universe for research applications. Prior to the events of Dread, the Federation received a mysterious video message that indicated the survival of the X Parasites. Having traced the transmission to ZDR, a team of seven[1] E.M.M.I. are dispatched to investigate, but they vanish soon after arriving on the planet.

Despite its roughly humanoid build, an E.M.M.I. can freely rotate its joints 360 degrees, allowing it to contort its body in a variety of fashions; for example, it can turn around on the spot by rotating individual body parts instead of moving its feet to turn its entire body at once. When patrolling an area, it usually walks on all fours, using the sharp claws on its extremities to scale walls and ceilings.

The E.M.M.I getting reprogrammed by Raven Beak and Quiet Robe.

According to the Metroid Dread Report, E.M.M.I. are DNA-extracting machines now relentlessly bent on capturing Samus Aran.[2][3] In-game, it is revealed that they were reprogrammed by Raven Beak to extract the Metroid DNA Samus gained as a result of her vaccine, allowing Raven Beak to revive the Metroid species once again.

They may have been created by the Exelion Star Corporation.


Samus viewed through an E.M.M.I.'s perspective.

E.M.M.I. are completely invulnerable to Samus Aran's normal weapons, forcing her to flee from them if they catch her.[4] They patrol specialized zones with a darker atmosphere. When Samus enters such zones, she is at constant risk of being detected by the resident E.M.M.I. They can detect any noise she makes such as footsteps, but they will not easily find her if she stays still. She can evade their gaze by using the Phantom Cloak, but if an E.M.M.I. makes physical contact with Samus, it will detect her.[5]

An E.M.M.I.'s state is denoted by the color of their projected cone of vision: a blue light indicates an E.M.M.I. is in Patrol Mode, where it is not pursuing a threat.[6] A yellow light indicates Search Mode, at which point an E.M.MI. is tracking a noise Samus made.[7] When an E.M.M.I. confirms Samus's presence, Pursuit Mode will trigger, in which its light turns red and the robot begins to chase her.[8][9] It will also enter a permanent Pursuit Mode once its corresponding Central Unit has been deactivated, but E.M.M.I.-05IM and 06WB's main abilities will also cease to function.

If an E.M.M.I. manages to catch Samus, it will pin her to the ground and deploy a large spike from its head to impale her sternum, instantly triggering a Game Over. Samus has two chances to Melee Counter this attack[10], one before she is grabbed and one before she is impaled, but the window of success is very small; if she successfully counters it, the E.M.M.I. will be stunned, allowing her to slide underneath them. The timing of a counter is slightly easier if done underwater, before Samus acquires the Gravity Suit. A checkpoint occurs outside of each E.M.M.I. Zone entrance should she Game Over.

E.M.M.I. can be destroyed with the Omega Blaster and Omega Stream, temporary enhancements Samus can collect from Central Units.[11] Once she has the power, Samus must wait for an E.M.M.I. to approach; then, she can use Free Aim with the Omega Stream to overheat the plates on its head. After sufficient exposure, the E.M.M.I. will briefly recoil as its faceplates explode, exposing a large red core; Samus must aim at the core (causing it to turn blue) and fire a fully-charged Omega Blaster to destroy the E.M.M.I. at last. The process is made more difficult by the fact that sustained fire is needed to destroy the face plating and the Omega Blaster takes time to charge; while the Omega Stream slows down an E.M.M.I. considerably, it's advisable to find a long, straight corridor first to give Samus the time she needs to fully destroy it. If the E.M.M.I.'s face plating is destroyed and is on the same platform as Samus, it will stand upright and walk toward her; in this state it is able to pin her immediately on contact, giving her only one chance to counter.

Besides the Omega weaponry, it is also exceedingly vulnerable to the Metroid's energy draining abilities.

Individual E.M.M.I.[]

There are seven E.M.M.I. encountered on ZDR, with each one designated a specific serial ID on the Mission Log screen that refers to its number and initials hinting which item upgrade will be obtained upon its defeat (with the exception of E.M.M.I.-01P, which does not reward any upgrades). Each of the E.M.M.I sport a different armor color as well as different abilities to set them apart.


E.M.M.I. approaching Samus closeup.png

The first E.M.M.I. is encountered in Artaria, after Samus drops through an airduct and into a hallway below. The E.M.M.I.-01P is severely damaged; it lacks a faceplate and a left forearm, and the rest of its silver body is visibly scorched and sparking. It lacks most of the abilities of other E.M.M.I. units, only being able to slowly walk around in its default bipedal stance.

The damaged E.M.M.I.-01P cannot be evaded in its first appearance, allowing it to trap Samus and trigger a tutorial that explains how to escape an E.M.M.I. in this situation. Samus must counter its attack and then Slide under it while it is stunned; she must then run into the next room and quickly jump up the platforms before the E.M.M.I. catches her again. Too damaged to pursue, it is left to claw at the wall impotently; Samus pauses for a moment to observe it before continuing on.

After acquiring a temporary Omega Cannon upgrade from a nearby Central Unit (which was also heavily damaged), Samus can return to the room where she encountered the E.M.M.I.-01P. When it reappears, she must charge the Omega Blaster and quickly shoot the robot in its eye to destroy it.

Raven Beak defeats E.M.M.I-01P.

Although it is never explicitly stated in-game how it ended up in its damaged state, the unlockable Chozo Archives show that Raven Beak encountered and bested it in battle within the Central Unit room.


This is the second E.M.M.I. to be encountered. Samus's first encounter with the white E.M.M.I.-02SM was shown in the game's Announcement Trailer. Aside from its white plating, it is notable for the impractically large facial plate projections on its faceplates; other E.M.M.I. units have such projections, but at a much smaller size, allowing them to fit in narrow passageways.

The E.M.M.I.-02SM patrols an E.M.M.I. Zone in the depths of Artaria. It is first shown clinging to a ceiling, seemingly dormant; when Samus cautiously moves through the hallway beneath it, it activates and climbs down behind her. Startled by its appearance, Samus fires two shots and a Missile at its face, to no avail. With no other options, she begins to run and Slides through a tight space under a wall, which it cannot follow her through; it instead climbs over the wall to continue its pursuit.

Samus can lose this E.M.M.I. entirely by entering a small room with a water-filled alcove and Sliding into it; if she stays still for a few moments, the E.M.M.I.-02SM will lose sight of her and resume its normal patrol patterns. It can catch her again if Samus exits the alcove and continues exploring the E.M.M.I. Zone, but there is an escape route in the alcove.

After Samus speaks to Adam in a Communication Room, she enters another E.M.M.I. Zone where the E.M.M.I.-02SM is patrolling. Samus must evade it as she continues exploring Artaria, until she reaches an elevator to Cataris.

At a later point, Samus acquires the Omega Stream from another Central Unit; the E.M.M.I.-02SM detects this and immediately begins moving to intercept her. Samus must use the Omega Stream to shoot the E.M.M.I.'s face as it crawls towards her; once the plating is destroyed, the E.M.M.I. stands up and begins to walk toward Samus. Finishing it off with the Omega Blaster, Samus touches it and obtains the Spider Magnet ability.


Some time after arriving in Cataris, Samus enters another E.M.M.I. Zone. In a short cutscene, the green E.M.M.I.-03MB drops down in front of her and turns around, activating its scanner. Unable to detect Samus through her Phantom Cloak, it turns around and crawls through an air vent, demonstrating its main advantage over the previous E.M.M.I. units, which will become common place with the future E.M.M.I. units Samus faces.

Once destroyed, the E.M.M.I.-03MB allows Samus to regain the Morph Ball.


During her exploration of Dairon, Samus encounters the yellow E.M.M.I.-04SB which is capable of running at extremely high speeds. It chases Samus through a passageway, but its attack is thwarted when the bounty huntress closes a door with seconds to spare (this was shown in a Japanese commercial). The main flaw of its ability is that it takes a moment to charge and cannot be used on walls or inside vents.

Once destroyed, the E.M.M.I.-04SB allows Samus to regain the Speed Booster and the Shinespark technique.


The blue E.M.M.I.-05IM patrols an E.M.M.I. Zone in Ghavoran, but it is first seen in an immobilized state due to Quiet Robe's hacking. Unfortunately for Samus, it is reactivated by Quiet Robe's X Parasite copy, causing it to freeze and shatter an Autool as it resumes its patrol.

The E.M.M.I.-05IM's unique ability allows it to freeze Samus if it catches her in its "spotlight", which also inflicts minor damage; this can be avoided by putting a wall between it and Samus. Once destroyed, its remains grant Samus the Ice Missile.


The purple E.M.M.I.-06WB ambushes Samus when she stops to examine a mural in Ferenia's E.M.M.I. Zone; it stuns her through the wall before smashing through the mural and grabbing her arms to leave her helpless. However, it was prevented from finishing the job when Quiet Robe deactivated it remotely, causing it to drop Samus and become immobile. It would eventually be reactivated by Quiet Robe's X copy, resuming its patrol and awaiting Samus's return.

Much like its blue counterpart, the E.M.M.I.-06WB's unique ability is a paralyzing shot it can fire when Samus enters its field of vision. Its shot doesn't stun her as long as the E.M.M.I.-05IM's can, but it can be fired through walls. Additionally, its vision has more range and can see through terrain, allowing it to find her more easily and from a longer distance while forcing Samus to keep moving in order to stay out of its sight in between Phantom Cloak recharges. Its E.M.M.I. Zone also has very few corridors long enough for Samus to successfully use the Omega Cannon against it, necessitating her to open up a path by removing obstacles along the way.

Once the E.M.M.I.-06WB is destroyed, its remains grant Samus the Wave Beam.


Dread Samus MetroidPowers EMMI.png

The final E.M.M.I. encountered in Metroid Dread, the orange E.M.M.I.-07PB ambushes Samus when she enters an E.M.M.I. Zone in Hanubia. It releases a massive burst of explosive energy that severely damages the entire room and staggers Samus long enough for it to close in; she stuns it with a Melee Counter, but is distracted by her Metroid DNA acting up, allowing the E.M.M.I. to recover and pin her down. Unable to escape its grasp, Samus grabs its head-mounted needle as it tries to stab her, draining its energy with her Metroid powers. Despite being fully mechanical, the E.M.M.I.-07PB is affected by this power, allowing Samus to drain it (and its associated Central Unit) to deactivation.

The E.M.M.I.-07PB's lifeless body remains in the background of the room as a red Chozo Soldier attacks Samus immediately after her victory over the rogue robot. Once the soldier is destroyed, Samus is free to regain her Power Bomb ability from the E.M.M.I.-07PB's remains.

Other appearances[]

"What's the matter? All I said was that Komaytos look like little Metr—"

Non-canon warning: This article or section contains information that may not be considered an official part of the Metroid series in the overall storyline by Nintendo.

Super Smash Bros. Ultimate[]

In Super Smash Bros. Ultimate, the E.M.M.I. appears as a Spirit during Spirits of Dread, a Spirit Board Event held during the weekend of Metroid Dread's release. It is an Ace-class Attack Primary Spirit that increases the fighter's speed.

In its Spirit Battle, the E.M.M.I. is represented with a Giant R.O.B. puppet fighter, using either his NES alternate costume (if the language is set to Japanese, Korean, or Chinese) or his Famicom alternate costume (if the game is set to any other language). It is a stamina battle where both fighters have only 30 HP; a strong enough attack (such as Samus's Charge Shot) can potentially K.O. the R.O.B. in one hit, much like the Omega Blaster. However, the R.O.B. has increased attack power and movement speed, and is completely invincible except for very brief moments, making it very difficult to hit without proper timing. The battle takes place on the Battlefield form of Brinstar Depths, with Lockdown Battle Theme as the background music.

Non-canon warning: Non-canonical information ends here.

Official data[]


"A new Samus amiibo™ figure featuring her suit from Metroid™ Dread and an E.M.M.I. amiibo figure are available in a 2-pack set. [...] The E.M.M.I. amiibo grants Samus a Missile Plus tank, increasing her missile capacity by 10, additionally the E.M.M.I. amiibo can be tapped again to replenish some missiles once per day."

On-screen tutorial[]

"An E.M.M.I.'s attack can be countered by pressing [X] at the exact moment of the flash. However, the timing is extremely difficult to gauge, making this a desperate maneuver*."

"Tilt** [L stick], and press [ZL] to slide under an E.M.M.I. while it's stunned."

*In E3 2021 footage, the last sentence ended by describing counters as "a last resort at best". This was changed to "a desperate maneuver" for the final release.

**In E3 2021 footage, the tutorial said to Hold the L stick and had no comma.

Metroid Dread Report[]

What are E.M.M.I.?
"An Extraplanetary Multiform Mobile Identifier—or E.M.M.I.—is a highly agile research robot equipped with the ability to extract DNA. The Galactic Federation dispatched several to the uncharted planet ZDR in order to research the X parasite, a lifeform with mimicking capabilities. But, somehow, the E.M.M.I. on ZDR went dark.
On her subsequent mission to investigate what’s happening on ZDR, Samus encounters the E.M.M.I.—only to find their behaviors and intent seemingly corrupted."
~Transmission from the dev team~
"The E.M.M.I. are robots that belong to the Galactic Federation, so they are not ordinarily an enemy of Samus. However, the E.M.M.I. that appear before Samus identify her as a target and relentlessly chase after her. Our belief is that the E.M.M.I.’s lack of emotion and overwhelming power will combine to create a threat so great that they strike terror in the hearts of players."
What happens if Samus is caught?
"E.M.M.I. roam freely within their zone. Depending on what their sensors are picking up, they are programmed to take one of three courses of actions, indicated by the color of their light.
Patrol Mode (blue light): Roaming the area and has not yet detected Samus.
Search Mode (yellow light): Investigating a suspicious sound.
Pursuit Mode (red light): Pursuing its locked-on target at high speed.
When Samus is caught by the E.M.M.I., it’s almost certainly the end for her. Be very careful to avoid detection as you explore zones where E.M.M.I. are active."
~Transmission from the dev team~
"If caught by the E.M.M.I., you may still have a chance to escape—however slim it may be! Strike with a well-timed Melee Counter the instant the E.M.M.I. opens itself up to attack. However, this window of opportunity has such narrow timing of success you may consider it nearly impossible to land a counter—so much so that you may want to avoid this situation at all costs.
However, there's always a nearby checkpoint to restart from, which should be helpful if something goes sideways and Samus is captured."
Are the E.M.M.I. invincible?
"The protective plating on the E.M.M.I. is made of a special material said to be the strongest stuff in the universe and can deflect Samus' standard attacks. However, by taking in the energy from the Central Units—the mother computers managing each E.M.M.I. Zone—her arm cannon temporarily powers up to become an Omega Cannon, and she becomes able to fire the Omega Stream and Omega Blaster. The E.M.M.I. are vulnerable to these forces."[]

E.M.M.I. icon on Dread site.png

"The Extraplanetary Multiform Mobile Identifiers (E.M.M.I.) are large, highly agile research robots equipped with the ability to extract DNA. Originally dispatched by the Galactic Federation for research purposes to planet ZDR, these extremely deadly robots are now in relentless pursuit of Samus."
"The Extraplanetary Multiform Mobile Identifiers—or E.M.M.I.—are highly agile, large research robots. Their peaceful purpose has been somehow corrupted, and they are now on a relentless chase to capture Samus. For her, getting caught means certain doom."
"The protective plating on the E.M.M.I. can deflect Samus’ weapons, so it’s best to stay out of sight. If caught, there is a slim chance you can escape its clutches with a well-timed Melee Counter—but this window of opportunity is extremely narrow."
"Depending on what their sensors are picking up, the E.M.M.I. are programmed to take one of three courses of actions.
1/3 Patrol Mode (blue light): Roaming the area. The E.M.M.I. Zone Doors are unlocked.
2/3 Search Mode (yellow light): Investigating a suspicious sound.
3/3 Pursuit Mode (red light): Relentlessly going after its target. Exiting the area is impossible."


  • The E.M.M.I. were first conceived by Yoshio Sakamoto when he was developing Dread 15 years prior to its announcement (circa 2006). He told Polygon that they were inspired by the SA-X from Metroid Fusion, which stalked Samus throughout the game and was too powerful for her to defeat until the very end. Unlike the SA-X however, which is infamous for its poor artificial intelligence programming, the E.M.M.I. will relentlessly pursue Samus if they catch her. Sakamoto said he was very proud of the E.M.M.I. gameplay as it was now, which exceeded his idea from the mid-2000s.[12]
  • All E.M.M.I. model numbers are suffixed with the initials of the ability they possess. However, since E.M.M.I.-01P disintegrated before Samus can absorb any ability from it, what ability it possessed, if any, is unknown.
  • The E.M.M.I. depicted in official artwork resembles the E.M.M.I.-02SM without its protective faceplates, resembling its vulnerable appearance after using the Omega Stream to destroy its armor.
  • The E.M.M.I are similar to the Guardian bosses in Metroid Prime 2: Echoes, as both groups use different abilities stolen from Samus against her, and there are total of six in each group. The difference is that only six E.M.M.I (excluding the first, damaged one) restore any of Samus's abilities. They are also similar in function to the Core-X bosses in Metroid Fusion, which reward Samus with her regaining one of her lost abilities.
  • Several sources indicate that there is only one chance to escape an E.M.M.I.'s attack. This is a misdirection; there are in fact two chances to escape. The first is the flash when an E.M.M.I. is about to pin Samus down; the second is the flash when it is about to pierce Samus' armor to deal the killing blow.



  1. ^ Nintendo of America (NintendoAmerica). "Samus encounters different kinds of E.M.M.I. during her mission. As you’ll notice, this #MetroidDread illustration shows seven shadows behind Samus. Each of the E.M.M.I. have different abilities & hold many mysteries. Keep an eye out for more information on them in the future!" 9 July 2021 4:35 p.m. Tweet.
  2. ^ Nintendo of America (NintendoAmerica). "E.M.M.I. – Extraplanetary Multiform Mobile Identifier. ¶ These robots are not ordinarily an enemy of Samus, but E.M.M.I. that Samus encounters relentlessly chase after her. When faced with an encounter, they’ll take one of a few programmed course of actions. #MetroidDread" 30 June 2021 11:45 a.m. Tweet.
  3. ^ Nintendo UK (NintendoUK). In Metroid Dread, Samus faces a new threat: the Extraplanetary Multiform Mobile Identifiers, or E.M.M.I. for short. ¶ These Galactic Federation robots aren’t originally her enemy, but the ones she encounters on planet ZDR will pursue her without hesitation or remorse." 2 July 2021 7:00 a.m. Tweet.
  4. ^ Nintendo of America (NintendoAmerica). "One hit from an E.M.M.I. and it's all over... #MetroidDread provides plenty of challenge for series fans, but frequent checkpoints help you get right back in the action. #NintendoTreehouseLive" 15 June 2021 1:12 p.m. Tweet.
  5. ^ Nintendo of America (NintendoAmerica). "The powerful E.M.M.I. stalk Samus in #MetroidDread, and she must use a variety of moves to escape their deadly attacks. If you somehow succeed in countering, Samus can use her new slide ability to make a daring escape. #NintendoTreehouseLive" 15 June 2021 1:05 p.m. Tweet.
  6. ^ Nintendo of America (NintendoAmerica). "The E.M.M.I.’s course of action is indicated by the color of their light. A blue light indicates Patrol Mode. The E.M.M.I. roams the area free of suspicion…" 30 June 2021 11:45 a.m. Tweet.
  7. ^ Nintendo of America (NintendoAmerica). "A yellow light indicates Search Mode. You’ve alerted the E.M.M.I., causing it to investigate the suspicious sound." 30 June 2021 11:45 a.m. Tweet.
  8. ^ Nintendo of America (NintendoAmerica). "If you see a red light, step #1 is to RUN. The E.M.M.I. is now in full Pursuit Mode, ready to pursue its target at high speed." 30 June 2021 11:46 a.m. Tweet.
  9. ^ Nintendo UK (NintendoUK). "The colour of the E.M.M.I.’s light will change depending on its current state. If it turns red and starts chasing Samus, it’s time to run! #MetroidDread" 2 July 2021 7:06 a.m. Tweet.
  10. ^ Nintendo of America (NintendoAmerica). "When Samus is caught by the E.M.M.I., there’s a chance she can escape with a well-timed Melee Counter. However, the window of success is narrow, so you’ll need to focus and might even consider it nearly impossible." 30 June 2021 11:46 a.m. Tweet.
  11. ^ Nintendo of America (NintendoAmerica). "E.M.M.I. are very durable and can deflect Samus’ standard attacks. However, Samus can take in energy from defeated Central Units in E.M.M.I. Zones to temporarily power up her arm cannon & fire the Omega Stream & Omega Blaster, forces the E.M.M.I. are vulnerable to. #MetroidDread" 8 July 2021 12:30 p.m. Tweet.
  12. ^ Myers, Maddy. Polygon. "Metroid co-creator on why Metroid Dread is all about scary robots" 17 June 2021 9:00 a.m. EST. Retrieved on June 17, 2021.
  13. ^ Nintendo of America (NintendoAmerica). "Have an early look at the #MetroidDread Samus and E.M.M.I. #amiibo figures, releasing alongside the game on 10/8!" 15 June 2021 12:20 p.m. Tweet.
  14. ^ Nintendo NY (NintendoNYC). "Careful, an E.M.M.I has been spotted at #NintendoNYC…" 8 October 2021 6:41 a.m. Tweet.