Metroid : Enemies

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Enemies [Brinstar]

Zoomer
Enemies come in two types: strong red ones that move along floors while emitting slime from their feet, and weaker yellow ones.
[Spawn Location] Brinstar

Zoomer[red]
The red Zoomer is stronger than the yellow one.
[Spawn Location] Brinstar

Zeb
At various locations, they emerge from ventilation ducts. Be cautious as there are both yellow ones, which can be defeated with one shot of the normal beam, and red ones, which require two shots to defeat.
[Spawn Location] Brinstar

Zeb[red]
The red Zeb is stronger than the yellow one.
[Spawn Location] Brinstar

Skree
They cling to the ceiling, lying in wait, and when Samus approaches, they attack while rotating.
[Spawn Location] Brinstar

Mellow
They can pass through rocks and walls. They tend to swarm and attack in groups.
[Spawn Location] Brinstar

Ripper
forward without any thought. They can be frozen with the ice beam.
[Spawn Location] Brinstar

Ripper[red]
A variant of the Ripper. Red Rippers can be defeated with missiles.
[Spawn Location] Brinstar

Rio
An formidable enemy that flies towards Samus from above walls. There are two types: strong red ones and weak yellow ones.
[Spawn Location] Brinstar

Rio[red]
The red Rio is stronger than the yellow one.
[Spawn Location] Brinstar

Waver
They flutter around irregularly, making them difficult to shoot. They are quite formidable enemies.
[Spawn Location] Brinstar

Waver[red]
It's not much different from the yellow "Wever."
[Spawn Location] Brinstar

Enemies [Norfair]

Mella
They move in groups and can pass through rocks and walls. They can be defeated with a single shot from the normal beam. They are the weakest in this area.
[Spawn Location] Norfair

Squeept
They leap out of the lava and then fall back into it. They cannot be defeated with the normal beam.
[Spawn Location] Norfairr

Nova
Covered in sharp heat-resistant fur all over its body, it crawls along floors and walls. It can be defeated with one missile. However, with the Normal Beam, it requires two shots for the blue ones and four for the yellow ones.
[Spawn Location] Norfair

Nova[yellow]
The yellow Nove is stronger than the blue one.
[Spawn Location] Norfair

Ripper II
The Ripper, which appears on rock surfaces, has evolved further. It now emits fire from its rear and flies at high speed. Although its movement and shape remain the same, its speed has increased.
[Spawn Location] Norfair

Polyp
A weak enemy that emerges from ventilation ducts. It is a toxic lava with no vitality.
[Spawn Location] Norfair

Gamet
Covered in extremely hard skin all over its body, it leaps out from ventilation ducts to attack Samus. The red ones have double the attacking power.
[Spawn Location] Norfair

Gamet[red]
The red Gamet is stronger than the purple one.
[Spawn Location] Norfair

Dragon
It emerges from the lava, breathing fire at Samus. Beware, as being hit by the fire will decrease Samus's energy. It's an ancient dragon that resides in the sea of lava.
[Spawn Location] Norfair

Multiviola
A single-celled organism that flies around, bouncing off walls. It's quite a formidable foe as it bounces around unpredictably, making it difficult to defeat. It's tough to take down with the regular beam, so power up before battling it. You can defeat it with one missile.
[Spawn Location] Norfair

Geruta
They have skin that emits high heat and fly around by releasing internal energy. They're quite formidable foes, especially the red ones, so be cautious. They have the strongest attack power in this area.
[Spawn Location] Norfair

Geruta[red]
The red Gerura is stronger than the purple one. In Norfair, they have the strongest attack power.
[Spawn Location] Norfair

Enemies [Kraid's Lair]

Memu
They can pass through rocks and walls. Be cautious as they often come in groups to attack Samus. They are the weakest enemies in the room, so make sure to defeat them without fail.
[Spawn Location] Kraid's Lair

Skree
They swoop down from the ceiling using their large wings as drills to attack Samus. Be cautious of the rock debris when they burrow into the ground.
[Spawn Location] Kraid's Lair

Geega
They emerge from the ventilation ducts and move horizontally, with two types present. The brown ones possess double the attack power.
[Spawn Location] Kraid's Lair

Geega[Brown]
The Brown Geega is stronger than the yellow one. The attack power is doubled.
[Spawn Location] Kraid's Lair

Zeela
They move along the floor and other surfaces in all directions. These soft-bodied creatures reside underground. The blue ones have stronger attack power.
[Spawn Location] Kraid's Lair

Zeela[blue]
The blue Zeela is stronger than the yellow one.
[Spawn Location] Kraid's Lair

Ripper
They don't charge at you; they just fly straight, so it's wise to avoid fighting them and simply flee.
[Spawn Location] Kraid's Lair

Sidehopper
They come at Samus while performing a double jump, making them formidable enemies. They're stronger than regular enemies but weaker than mini-bosses, so be cautious. They can be defeated with one missile.
[Spawn Location] Kraid's Lair

Fake Kraid
Unlike the real Kraid, this imitation has much weaker defense and can be defeated with just one missile or a slight attack from the Screw Attack.
[Spawn Location] Kraid's Lair

Kraid
The primary enemy in Mini-boss Room I. It shoots horns from its belly and spins horns from its back. It has strong attack power, and getting hit can drain a significant amount of energy, so be cautious.
[Spawn Location] Kraid's Lair

Enemies [Ridley's Lair]

Zebbo
Emerging from ventilation ducts, these enemies can be defeated with one shot for the blue ones and two shots for the yellow ones. They are the weakest enemies in the room.
[Spawn Location] Ridley's Lair

Zebbo[yellow]
The yellow Zebbo is stronger than the blue one.
[Spawn Location] Ridley's Lair

Holtz
Emerging from the ceiling, these armored Gerudas attack Samus and then retreat back to the ceiling. They wield two horns as weapons. They can be defeated with several shots from the Normal Beam or one missile.
[Spawn Location] Ridley's Lair

Multiviola
They appear on the fiery surface, moving swiftly, so be cautious. It's believed that Mother Brain has infused life into the melted rocks due to high temperatures. They possess the same attack power as Holts and Dessgeegas in the same room, making them formidable enemies.
[Spawn Location] Ridley's Lair

Viola
They cannot fly and instead crawl on the ground. They are the larvae of Multiviola. The blue ones can be defeated with two shots from the Normal Beam, while the yellow ones require four shots. However, both can be taken down with just one missile.
[Spawn Location] Ridley's Lair

Viola[yellow]
The yellow Viora is stronger than the blue one.
[Spawn Location] Ridley's Lair

Dessgeega
They repeatedly jump towards Samus while attacking. They possess strong offensive capabilities, second only to mini-bosses. They can be defeated with several shots from the Normal Beam or just one missile.
[Spawn Location] Ridley's Lair

Ridley
The boss of the Room Ⅱ. It jumps into the air and breathes fire. It's a native creature of Planet Zebes, controlled by Mother Brain.
[Spawn Location] Ridley's Lair

Enemies [Tourian]

Rinka
A fireball-like entity suddenly appears in the final area of the game. It continuously spews out fireballs, but its attack power isn't that strong.
[Spawn Location] Tourian

Metroid larva
A floating lifeform discovered on planet SR388. It attaches to Samus's body and drains energy. While it recoils when attacked with beams, it cannot be defeated! However, it can be frozen with the ICE Beam and then defeated with a few missiles.
[Spawn Location] Tourian

Cannon
They are attached to walls or ceilings and fire small projectiles at Samus to protect Mother Brain.
[Spawn Location] Tourian

Zebetite
It is the energy source necessary for Mother Brain's life support. It does not attack but to destroy it, multiple missiles need to be continuously fired. It has a self-repair function and will fully restore itself over time.
[Spawn Location] Tourian

Mother Brain
The central hub of the Space Pirate stronghold, "Planet Zebes." It serves as a breeding ground for Metroids with the aim of universal conquest. Zebetite serves as the energy source. While it's referred to as a massive mechanical lifeform, its true nature remains unknown. Can you destroy Mother Brain and prevent the Metroids from further proliferation?