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Asboreans[1] (アスボロー星人 Asborow?)[2] are worm-like creatures in Metroid: Other M, which wear a mobile armor resembling that of a horseshoe crab.


Concept art reveals that the Asborean is a hybrid, having become so when a mechanical weapons component was crafted onto a primarily organic base.[3]

The Asborean can be first seen clinging to a wall in each appearance, waiting to ambush Samus when she reaches a certain point in the room. Only three are found in the Pyrosphere: two in the Floor Observation Room at different times and one in the room where Samus later fights a Rhedogian with Anthony Higgs. In the postgame, a duo attacks Samus in the "path of perils" before the Control Bridge.

The Asborean attacks by sliding around along the ground to ram into Samus, shooting smaller Asborean Spawns that home in clusters, and by getting up onto its hind legs and trying to headbutt or swipe at her. After sliding around for a while, it will stop and make its head vulnerable - a single Charge Beam shot will stun it. However, if not stunned, it will rush Samus with a grab attack and throw her behind itself. When it moves its head back up to swipe, it also reveals its glowing red weakpoint that can be hit for massive damage. If Samus tries to Overblast the Asborean, it will simply push her off; it can only be done when the Asborean is stunned.

After the Asborean sustains significant damage and becomes downed, performing a Lethal Strike will rip the creature from its armor, leaving the Asborean Cortex exposed and incredibly weak to sub-zero temperatures. A single Ice Beam shot completely freezes the unarmored Asborean, and it will die shortly afterward, although it can be immediately finished off with a second Ice Beam shot. However, if not killed immediately, the Asborean will wrap itself around Samus and self-destruct to cause significant damage.

The Asborean is often treated throughout Metroid: Other M as a mini-boss, being fought alone with special music. On Hard Mode, it summons an increased number of Asborean Spawns while it is stunned, making it harder to Lethal Strike.

Official data[]

Nintendo Official Guidebook for Metroid Other M[]

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Warning: Fan Translation(s) Ahead

This article, section, or file contains text that is unofficially translated by Metroid fans. Some information (such as proper English names of characters or items) may not be accurate. If an official translation becomes available, the fan translation(s) may be replaced.

"Asboreans look like beetles. When it retreats into its shell, it slides quickly on the ground toward Samus. Its true form inside is a snake."


  • According to the concept art, the spikes on the Asborean's armor are Missiles and could be fired at its opponents. However, the creature never performs such a feat in the game.
  • The Asborean's Japanese name includes the kanji 星人, which is shared with various Other M enemies including the Zebesian. Similarly, the Asborean's English name ends with -ean, a variation of the -ian suffix. Since this name indicates that the Zebesian is an inhabitant of Zebes, this may imply that Asboreans are native to a (currently-unseen) planet named Asborow (アスボロー?).