"Cannot translate alien text."

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This article's name is an unofficial translation from official Japanese media
and may not represent the canonical English name, if one exists.

An alternate name from an official source may be required.

Mua
Official artwork for the Acid Worm
Featured in	Metroid: Zero Mission
Location	Kraid's Lair
Attacks	Ability to raise acid level, strike with maw, and spit globs of acid
Weakness	The sensory sack at the base of the mouth
Reward(s)	None

Mua (also known as the Acid Worm) is a miniboss Samus fights in Metroid: Zero Mission. Once Samus has activated the rail system in Kraid's Lair and attempts to move onwards, she will encounter this creature. Mua resides in a considerably large pool of acid.

BattleEdit

Mua attacks by lunging out of the acid at Samus, spitting globs of some sort of substance (presumably more acid) which contain Energy Capsules or Missile Ammo when destroyed, and raising the acid level (not present in Easy Mode). The worm will flick its teeth in and out just before it lunges at Samus. To avoid this attack, Samus must use the Zip line on the ceiling to travel to the other side of the room. When this happens, Mua will ram into a block hard enough to accidentally lodge its teeth in the block, making it unable to move for a few seconds. When it raises the acid level, Samus should jump to one of the two higher platforms in the chamber; however, if Samus has performed a Sequence Break to obtain the Varia Suit early, the acid is nothing to worry about.

To cause injury, Samus must fire at what appear to be the creature's eyes just after it has stuck itself in a platform after lunging. She needs to fire from directly opposite the creature to be able to cause injury. The most effective weapon to use is a Missile, but Samus can still use the Ice Beam if she has run out of Missiles, which is most likely to happen on Hard Mode. If Samus happens to have the Wave Beam or does not have the Long Beam, she won't be able to cause any damage, either because her shots are too large or because the shots won't reach.

As Mua takes more damage, it will strike more quickly, forcing Samus to act faster. Once it has been defeated, the acid will drain, allowing her access to the floor. A path leading to a Missile Expansion lies under the spot where the worm was resting.

In the Japanese website of Zero Mission, this creature is given the title Lava's Corruption.

TriviaEdit

• The Mua cannot be battled unless Samus arrives after activating the rails throughout Kraid's Lair. If she does, the room will be flooded with acid and several Reos will be present.
• The battle with the Mua is somewhat similar to that of Serris, as both battles involve some sort of locomotion on the ceiling to avoid the enemy's attacks.

• Mua bears a great deal of similarity to a Yapping Maw in appearance, habitat and behavior.

• It is possible to keep the Mua from raising the acid. This can be made possible if Samus jumps onto one of the higher blocks just before the Mua goes underneath the acid.
• When Mua lunges, the acid level lowers slightly, as is the case when an object is moved within a pool of liquid.

GalleryEdit

Samus avoiding the Acid Worm's ramming attack.

The Acid Worm raising the level of the acid.

The room after Samus defeats the Acid Worm.

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