The Desbrachian (デスバルク星人 Death Bulk ) is a large, somewhat beetle-like creature that makes its first appearance in the endgame of Metroid: Other M, where they are controlled telepathically by MB. Samus must contend with at least four of them at once alongside Madeline Bergman and a cohort of Galactic Federation soldiers in the Bioweapon Research Center control room.
In various places on the BOTTLE SHIP, Desbrachians can be seen in a hemispherical, cocoon-like form that occasionally covers doors leading to hidden passageways or expansions. At first, Samus is unaware of their true nature, but it can be quickly inferred they are obstacles to expansions and passageways as the Search View states "Power Bomb" when targeted, which she may only obtain after the post-credits sequence. If the Power Bomb is executed upon the cocoon, it will open up into a Desbrachian, and attack.
Desbrachians are implied to be a sort of "supersoldier" organism for MB, and they truly are a force to be reckoned with. Many of a Desbrachian's attacks can drain an entire Energy Tank, even when Samus is equipped with the Gravity Feature. They are highly resistant to both Samus' Plasma Beam and her Super Missiles, although three Super Missiles can destroy one.
A Desbrachian attacks by slashing with its arms and moving at high speeds. If Samus jumps with a Desbrachian nearby it will quickly slam her to the floor, so hitting them with a Screw Attack is difficult; even so, they are one of the few enemies on the BOTTLE SHIP that survives more than one blow from the move. The creature also has a grab attack with a specific sound cue. If the first hit connects, it will throw Samus into the air before slamming her down again - if Samus tries to Counter Attack she will not actually attack, but rather cancel the Desbrachian's midair blow. Once a Desbrachian has taken sufficient damage, its body taking a red tint, it will become stunned and susceptible to a Lethal Strike. However, Overblasts are entirely impossible.
The Desbrachian also displays an ability to retreat into a green-tinted version of its cocoon and regenerate when low on health, so it is recommended to use a Lethal Strike before this can happen. Laying a Power Bomb can dislodge a Desbrachian from its regenerating state while dealing moderate damage to the creature. When using a Power Bomb otherwise, the Desbrachian will immediately retreat into its cocoon to avoid being vaporized, but will still take damage.
If Samus fires a Missile at a Desbrachian, it will emit a purple shockwave which impairs her first-person vision for a moment. The Missile will also bounce off the Desbrachian harmlessly; it can even ricochet back at Samus for minor damage.
"The Desbrachians hide in power-bomb blocked gates. They are incredibly fast, and have powerful dash and jump attacks. Without Sense Move, the Desbrachian is a dangerous opponent."
- Strangely, in the scene with battling MB, there are approximately 6 Desbrachians surrounding Samus and company in the cutscene, but there are only 4 when battled.
- After the battle with MB, her four Desbrachians revert to their cocoon-like resting state. However, if Samus returns to the room after the credit sequence, they will have vanished. It is possible that they were taken by the Federation for study in between her visits, similar to Nightmare's and the Ridley clone's corpses, or they were simply disposed of. The latter reason is more likely, as no Desbrachians were seen aboard the Biologic Space Laboratories research station.
- The Desbrachian's Japanese name includes the kanji 星人, which is shared with various Other M enemies including the Zebesian. Similarly, their English names end with the -ian suffix. Since this name indicates that the Zebesian is an inhabitant of Zebes, this may imply that Desbrachians are native to a (currently-unseen) planet named Death Bulk (デスバルク) or Desbrach.