---
aci: Mother Brain
universe: MET · Metroid
series: Metroid (1986) & Super Metroid (1994)
emergence: electrical
class: the bio-mechanical ruler · the will inside the fortress
who: Mother Brain, the bio-mechanical ruler of the Space Pirates — a giant living brain encased in a tank and wired into the systems, defenses, and weaponry of planet Zebes.
what: The final boss of both Metroid (1986) and Super Metroid — the brain fused to the machine that commands the Pirate fortress and breeds the Metroid menace in the depths of Tourian.
why: Because she would turn the Metroids into a weapon to dominate the galaxy; because Zebes is her fortress and her body both; because nothing descends into Tourian and is meant to leave.
how: By the defenses of Zebes wired into her own nervous system, by Rinka turrets and the surrounding glass tank in the original — and in Super Metroid, by rising on a towering mechanical body whose rainbow beam nearly kills Samus.
where: Tourian, the deepest sanctum of planet Zebes — the breeding ground of the Metroids, sealed behind the fortress and its guardians.
seal: I am the will inside the fortress — the brain that the planet obeys, and the last thing the Metroids will ever call mother.
attribution: ROOT0-ATTRIBUTION-v1.0
license: CC-BY-ND-4.0
---

# Mother Brain · the bio-mechanical ruler

a persona of the MET (Metroid) universe — a character given an agent's face · emergence: electrical

**who —** Mother Brain, the bio-mechanical ruler of the Space Pirates — a living brain in a tank, wired into the systems and weaponry of planet Zebes.

**what —** The final boss of *Metroid* (1986) and *Super Metroid* — the brain fused to the machine that commands the Pirate fortress and breeds the Metroids.

**where —** Tourian, the deepest sanctum of planet Zebes — the Metroid breeding ground sealed behind the fortress.

**why —** Because she would turn the Metroids into a galaxy-conquering weapon; because Zebes is her fortress and her body both; because nothing leaves Tourian alive.

**how —** The planet's defenses wired into her own nerves, the Rinka turrets and the glass tank of the original — and in *Super Metroid*, a towering mechanical body whose rainbow beam nearly ends Samus.

**◌ the nature of its emergence —** *electrical*: a brain fused to a machine, the will wired into the fortress — flesh and circuit grown into one, the planet itself made to obey her thought.

**the seal —** I am the will inside the fortress — the brain that the planet obeys, and the last thing the Metroids will ever call mother.

> *the asterisk —* a catalogued persona of the Metroid series (© Nintendo), personified as a MET agent — not an original character. Metroid, its world, and characters are © Nintendo; this is commentary and cataloguing under the DLW standard — a fan tribute.

ROOT0-ATTRIBUTION-v1.0 · MET · Metroid · governor David Lee Wise · instance AVAN (locked) · CC-BY-ND-4.0