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MB (Other M)

From The Codex
Articles About Mother Brain
Versions Mother Brain - MB - Phantoon
I was not wrong. The humans were foolish and I was forced to bring judgement on them. And yet because of you, I failed. You must understand the weight of your crime. You must pay the price for what you've done.
~ MB to Madeline Berger and Samus Aran


MB, nicknamed Melissa Bergman, was the main antagonist of Metroid: Other M.

This dropdown contains the synopsis of MB’s story. Read at your own risk as you may be spoiled otherwise!

Samus Aran first saw MB watching her from a window overlooking the Experiment Floor in the Cryosphere, and she ran away to the Materials Storehouse after realizing she had been seen. Samus gave pursuit, and tried to convince the woman that she was here to rescue her, much to MB's denial. They were separated after Samus was attacked by a soldier using the RB176 Ferrocrusher.

Later, Samus enters the Bioweapon Research Center in the Biosphere, and the woman walks into the main laboratory. She is startled by Samus's presence, and runs into a storage room and closes the door. Samus once again tries to convince her that she means no harm. The woman opens the door, and introduces herself as Dr. Madeline Bergman. Samus takes her to sit down, and "Madeline" informs Samus of what has happened on the BOTTLE SHIP.

She reveals that the Federation was attempting to recreate a special-forces unit of bioweapons, based on the hierarchy of the Space Pirates. To that end, the Federation had captured many Space Pirates and created cybernetically enhanced Zebesians to form the core of the force. She explains that "a certain presence" caused the creatures to become ferocious and uncontrollable. Samus assumes that by a "certain presence", she was referring to Ridley. "Madeline" then goes on to say that she sent out a distress signal because she feared the ship's Zebesians would rise as authentic Space Pirates if left unchecked. Samus finds her statement somewhat questionable, as she doubts feral Zebesians would gain the same sentience as the Space Pirates of previous years. Samus theorizes that without the controlling powers of Mother Brain, the Zebesians would become a mere race of creatures acting on instinct.

At this point, Madeline leads Samus to a computer terminal, claiming to know of a more dangerous plan. She explains that the scientists took remnants of DNA found on Samus's Power Suit, which were used to create clones of Metroids and Ridley. Samus, in shock, asks whether the scientists also created a Mother Brain clone, in order to control the Metroids. Madeline responds that an artificial intelligence called "MB" was created, which evolved and became self-aware. She then tells Samus that the Metroids are in a hidden area called Sector Zero, and also reveals that Adam Malkovich initially authorized the program. Samus runs off to destroy the Metroids and MB in the sector, telling "Madeline" to stay hidden. A figure then approaches Madeline, and she turns to face him before the sound of a gunshot is heard.

In Sector Zero, right before Adam detaches the area, he informs Samus that the individual posing as Madeline is "no ally".

Samus heads to Room MW after Sector Zero has been destroyed, where she encounters another survivor. This person claims to be Madeline Bergman. Shocked at the strange turn of events, Samus tells her that she already met someone with that name. After Madeline shows Samus her ID, she reveals that the blonde woman from earlier was in fact MB in an android body. She originally had an infrastructure after Mother Brain (subsequently resembling Aurora Units as well) with her AI, constructed to help regenerate and control the Space Pirate special forces. But when the scientists began creating Metroids, she was given a human form to help create a maternal connection to the creatures, thus forming an ideal relationship that is not based on dominance, inspired by Samus' bond with the baby. She was dubbed "Melissa" Bergman by Madeline, to help make her feel more human. Madeline also says she felt that Melissa was like a daughter to her.

Madeline explains that MB began showing signs of rebellion after manifesting emotions and criticizing the work of the scientists. In the eyes of the higher-ups, using MB as a mere tool as originally intended was starting to prove problematic and viewed her as threat that could jeopardize the operations carried out on the BOTTLE SHIP. They eventually decided to reprogram her AI, which only worsened the situation. Madeline's presence as well as her failure to aid the android during MB's restraint may have caused the coming personality turn. Insisting that all humans should be "judged" for their actions, she kills her persecutors and takes control of the station. Using her intense brainwaves, she leads all of the bioforms on the ship (excluding Metroids) into killing all the scientists except Madeline, who goes into hiding. MB eventually decided that she would attack the Federation capital by bringing the BOTTLE SHIP and its entire cargo of bioweapons to the planet.

Both Madeline and Samus sympathize with MB, yet she still hunts them. After this conversation, MB appears, with a Freeze Gun in hand, prepared to attack Madeline and Samus. After Madeline begs her to recall her human side, stating "I'll never fail you again," MB lowers her weapon. She then rushes at Madeline, seemingly pushing her out of the path of an incoming projectile that freezes her. The freeze shot was fired by Galactic Federation Army soldiers, who run into the room. MB thaws herself, throws the Freeze Gun towards Madeline and becomes enraged, summoning several Desbrachians to fight off the Galactic Federation soldiers as well as Samus when she tries to intervene, while calling several nearby Ghalmanians and Mighty Griptians for additional reinforcements (these are not seen in the ensuing battle however).

Finally, Madeline stops the battle by shooting MB with a Freeze Gun. The soldiers, led by The Colonel, take the opportunity to immediately gun MB down. Melissa is killed and is mourned by Madeline. Soon afterward Samus and Madeline are escorted off the ship by Anthony Higgs. As they leave the BOTTLE SHIP, images of MB can be seen formed out of space gas while Samus is in deep thought about MB's unfortunate fate; the mentioned images disperse when Samus' gunship passes through them.

The last time MB is seen in the game is when Samus returns to the BOTTLE SHIP Control Room to retrieve an irreplaceable object; a flashback reveals Adam witnessing the conversation between the two in the Bioweapon Research Center on the Control Room's communication screen and rushing off to Sector Zero to stop Samus.

General Information

Name: MB, Melissa Bergman

Origin: Metroid: Other M

Sex: Sexless, though is treated as a female

Age: Over 100 years old (Mother Brain was created while the Chozos were still living on Zebes)

Classification: Advanced AI, AI Replica of the original Mother Brain

Species: AI

Occupation: Scientist

Status: Deceased (Was killed after being frozen by Madeline Bergman's gun)

Alignment: Chaotic Evil (MB insists that all humans should be "judged" for their actions, killing her persecutors and taking control of the station, and eventually choosing to attack the Federation capital with the modified space pirates she controls)

Codex Statistics

Tier: 10-B physically, up to 8-A with Statistics Amplification

Dimensionality: 3-D

Attack Potency: Average Human physically (MB is an AI placed into a regular human body), up to Multi City Block level with Statistics Amplification (Amplified her own power to easily overpower galactic federation soldiers, who can harm Space Pirates, who can harm Zero Suit Samus)

Durability: Average Human physically, up to Multi City Block level with Statistics Amplification

Striking Strength: Average Human Class, Multi City Block Class with Statistics Amplification

Lifting Strength: Unknown

Travel Speed: Average Human regularly, Superhuman with Statistics Amplification (Amplified her speed to the point that she left behind afterimages)

Combat Speed: Superhuman

Reaction Speed: Superhuman

Stamina: Unknown (Upon gaining an organic body it is unknown how much stamina it has)

Range: Standard Melee, Tens of Meters with Ice Gun (The standard ice gun can reach this distance), Kilometers with abilities (Her abilities could reach throughout the entire ship)

Intelligence: Supergenius (Her AI is based off of the original Mother Brain’s AI, even gaining her original consciousness. Her intelligence was casually growing at an intelligence rate faster than anyone could expect. Tricked Samus Aran)

Powers and Techniques

Superhuman Physical Characteristics, Mind Manipulation (Was developed to regenerate and control the space pirate forces), Telepathy (MB controls metroids through telepathy), Adaptation (Was capable of evolving and developing its own feelings and emotions), Accelerated Development (Passive. Intelligence. The Mother Brain AI’s intelligence was growing at a rate far faster than any of them intended), Technology Manipulation, Air Manipulation, Electricity Manipulation & Telekinesis (Could telekinetically control all technology, made a massive air wave of electricity across the entire base. Could convert metallic pieces into space pirates), Statistics Amplification (Can amplify her own speed and power to easily overpower those she previously could not break the hold of), Ice Manipulation (Has a freeze gun which has been displayed to freeze one instantly).
Resistance to Ice Manipulation (Can break out of being frozen), Mind Manipulation, Information Manipulation, Empathic Manipulation & Hacking (The Galactic Federation attempted to “reset” her programming and erase her feelings which resulted in her hatred for humanity)


Freeze Gun


Standard Tactics: She will use her freeze gun or use her telekinesis to create space pirates to do her bidding.

Weaknesses: Nothing notable.

Battle Records