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Mother Brain

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Mother Brain
SSBU spirit Mother Brain.png
MetroidSymbol.svg

Official artwork of Mother Brain from Metroid: Zero Mission.

Universe Metroid
Debut Metroid (1986)
Smash Bros. appearances Brawl
SSB4
Ultimate
Most recent non-Smash appearance Metroid Dread (cameo, 2021)
Console/platform of origin Nintendo Entertainment System (Famicom Disk System)
Species Bio-mechanical supercomputer
Gender Female
Place of origin Zebes
Article on Metroid Wiki Mother Brain

Mother Brain (マザーブレイン, Mother Brain) is a major antagonist from the Metroid series. She appears in Super Smash Bros. 4 and Super Smash Bros. Ultimate as an Assist Trophy.

Origin[edit]

Mother Brain as she appeared in Super Metroid in her mechanized bipedal form using Laser Brain Attack on Samus.

Mother Brain is a recurring antagonist of the Metroid series, and a major leader of the Space Pirates. She appears in Metroid (and its remake Zero Mission), Super Metroid, and in a flashback sequence in Metroid: Other M.

In Metroid, Samus had to fire missiles to create an opening in Mother Brain's Control Capsule, then continue to fire missiles through that opening to damage Mother Brain while avoiding enemy Rinkas. In Super Metroid, the first half of the battle is similar to the battle in Metroid. After Mother Brain is seemingly defeated in Super Metroid, she transforms into her bipedal form with a mechanized body, and she also opens her eye. Towards the end of the battle, she will fire Laser Brain Attacks from her eye that almost kill Samus before being saved by a Metroid. In the Metroid remake, Metroid: Zero Mission, the battle is identical to how it was in Metroid, except after the Control Capsule is broken, she opens her eye and fires blasts from it. Although Mother Brain herself is absent in Metroid Dread, brain mechanisms similar to Mother Brain appear in the game along with enemy Rinkas.

Mother Brain as she appeared in Metroid: Zero Mission.
Mother Brain as she appeared in Metroid: Zero Mission.

Overall, Mother Brain's appearance in SSB4 and Ultimate is based off her appearance in Metroid: Zero Mission, as her Control Capsule is damaged and she has her eye opened; however, the Laser Brain Attack she uses originates from Super Metroid, but was only used in her mechanized bipedal form.

In Super Smash Bros. Brawl[edit]

Mother Brain is mentioned in the opening narration of Opening/Menu (Metroid Prime), which refers to her defeat during the events of Metroid and Zero Mission.

Sticker[edit]

Mother Brain appears as a sticker in Brawl.

Name Game Effect Fighter(s)
Mother Brain Metroid: Zero Mission StickerIconFlinchResistance.png +147 RandomHeadSSBB.png
Brawl Sticker Mother Brain (Metroid Zero Mission).png
Mother Brain
(Metroid: Zero Mission)

In Super Smash Bros. 4[edit]

As an Assist Trophy[edit]

Mother Brain attacking Samus on Pyrosphere.

Mother Brain appears in Super Smash Bros. 4 as an Assist Trophy. She uses her signature Laser Brain Attack when summoned, and is guarded by Rinka enemies. She can be killed by hitting her from behind after the Control Capsule's glass shatters following the laser blast.

Mother Brain stands as potentially one of the most damaging Assist Trophies in the game, as her Laser Brain Attack can do up to 90% damage if all hits connect, and will guarantee a shield break if an enemy decides to shield it. Despite such, it only does moderate knockback.

Trophy[edit]

Mother Brain's trophy in Super Smash Bros. for Nintendo 3DS
Mother Brain's trophy in Super Smash Bros. for Wii U
Mother Brain
NTSC Hailing from the Metroid series, this evil boss resides on the planet Zebes. When she appears in Smash Bros., she attacks with energy projectiles and a beam from her eye. It's actually possible to defeat her, and for once doing so won't start a self-destruct sequence.
NES: Metroid (08/1987)
SNES: Super Metroid (04/1994)
PAL A mainstay of the Metroid series and the final boss Samus faces on Planet Zebes. In this game, she grows to a gargantuan size and fires all sorts of energy blasts at you. Good news: you can beat her! Better news: doing so won't trigger a self-destruct sequence forcing you to make your escape!
NES: Metroid (01/1988)
SNES: Super Metroid (07/1994)
Melissa Bergman (MB)'s trophy in Super Smash Bros. for Wii U
Melissa Bergman (MB)
NTSC When Samus first encountered her on the Bottle Ship, she introduced herself as Madeline. Only later did Samus discover that she was actually an android named Melissa, also called MB. As Melissa's hatred for humans grew and became more apparent, the human scientists attempted (and failed) to reprogram her.
Wii: Metroid: Other M (08/2010)
PAL When Samus first encountered her on the Bottle Ship, she introduced herself as Madeline. Only later did Samus discover that she was actually an android called Melissa, host to the artificial intelligence known as MB, and that she bore a grudge against humans for trying to reprogram her after she developed emotions.
Wii: Metroid: Other M (09/2010)

In Super Smash Bros. Ultimate[edit]

As an Assist Trophy[edit]

Samus facing Mother Brain.

Mother Brain returns as an Assist Trophy in Super Smash Bros. Ultimate, seemingly without any change in function. However, KOing her will now earn a point. Training Mode describes her Assist Trophy: Shoots a powerful beam from her eye. Rinkas help her out. She cannot appear in Luigi's Mansion, Pac-Land, Rainbow Cruise, Spirit Train, The Great Cave Offensive, Tomodachi Life, Tortimer Island, and Umbra Clock Tower.

Spirit[edit]

Mother Brain also appears as two different primary spirits. Mother Brain (2nd Form) can be obtained by enhancing the Mother Brain spirit at level 99.

In Adventure Mode: World of Light, Mother Brain is presumably one of the countless spirits captured by Galeem during his takeover of the universe. After Galeem's defeat, Dharkon takes control of Galeem's spirits, including Mother Brain. After Dharkon's defeat, he flees to the final world, with Galeem following soon after. In the final world, Galeem and Dharkon wage war against each other using their captured spirits, with Dharkon taking control of Mother Brain.

Mother Brain's Spirit Board uses a Dark Samus puppet fighter and is fought on the Brinstar Depths stage's Ω form. During the battle, Mother Brain appears as a hostile Assist Trophy while Dark Samus' energy attacks have increased power, referencing Mother Brain's Laser Brain attack, which she uses in her second form.

No. Image Name Type Class Slots Base Power Max Power Base Attack Max Attack Base Defense Max Defense Ability Series
278
SSBU spirit Mother Brain.png
Mother Brain
Shield
★★★ 1 3165 9497 1693 5081 1472 4416 Can Be Enhanced at Lv. 99 Metroid Series
279
SSBU spirit Mother Brain (2nd Form).png
Mother Brain (2nd Form)
Shield
★★★★ 1 4746 11863 2121 5302 2079 5197 Giant Metroid Series

Gallery[edit]

Names in other languages[edit]

Language Name Meaning
Japan Japanese マザーブレイン, Mother Brain
UK English Mother Brain
France French Mother Brain
Germany German Mother Brain
Spain Spanish Mother Brain
Italy Italian Mother Brain
China Chinese (Simplified) 母脑 Mother Brain
Taiwan Chinese (Traditional) Mother Brain
South Korea Korean 마더 브레인, Mother Brain
Netherlands Dutch Mother Brain
Russia Russian Главный мозг Leader Brain