Metroid (creature)

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Official artwork of a Metroid from Metroid: Zero Mission.

Universe Metroid
Debut Metroid (1986)
Smash Bros. appearances Melee
Most recent non-Smash appearance Metroid: Samus Returns (2017)
Console of origin Nintendo Entertainment System (Famicom Disk System)
Species Metroid
Place of origin SR388
Article on Metroid Wiki Metroid (species)

The Metroid (メトロイド, Metroid) is a species of extraterrestrial creature and the namesake creature of the Metroid universe. Metroids are parasitic life forms that suck the life energy out of other living things to sustain themselves. This makes them a constant target for Samus' archenemies, the Space Pirates. Samus eventually put them into extinction, which caused their prey, the X-Parasites, to multiply and thrive once more. After being infected by an X-Parasite, the Galactic Federation saved her life by injecting her with the Vaccine "Metroid", which was made from the Metroid Hatchling from SR388. In addition to saving her life, this also gave her body Metroid-like characteristics, such as immunity to X-Parasites and weakness to cold temperatures. During her mission at the infested Biologic Space Labs Research Station, she discovered that the Galactic Federation had begun a Metroid breeding program. Upon this discovery, she set the ship's path to SR388, destroying the last remaining Metroids upon impact.


Official artwork of a Metroid from Super Metroid, which was the basis of the Melee trophy design.

Metroids first appeared in Metroid as an enemy and played a crucial part in the game's storyline. Metroids have also appeared in every Metroid game since except for Metroid Prime Hunters. Metroids are a species that live on SR388, and survive by latching onto other organisms and draining their energy with their gigantic teeth. Their greatest weakness is cold, so Samus can destroy them with her Ice Beam or Ice Missiles. The only way for Samus to shake off a Metroid is to drop a bomb while in her Morph Ball form, which deals damage and detaches it from her. In Brawl and SSB4, Metroids act the same as they do in the Metroid series, grabbing players and dealing damage. They can also phase through platforms, similar to a Phazon Metroid in Metroid Prime 3: Corruption.

The form most commonly depicted in the Super Smash Bros. series is the Metroid larva, although other forms have made appearances in the series. The fully-matured Queen Metroid (using its appearance from Metroid: Other M) and Phazon-mutated Metroid Prime have appeared as trophies; a Tallon Metroid appears as a sticker; and Dark Samus (a reincarnated form of the Metroid Prime) is a fully playable character in Ultimate.

In Super Smash Bros.[edit]

The Metroid was mentioned in Samus's biography.

In Super Smash Bros. Melee[edit]

The Metroid appears in Melee as a collectible trophy, unlocked as one of the 200+ trophies that can be collected randomly during normal play, such as in the Trophy Lottery and throughout the various Single-player Regular Matches.


The Metroid trophy from Melee.
A parasitic life form that can absorb all types of energy, Metroids have strong resistance to most conventional weaponry. To defeat them, Samus Aran had to freeze them with Ice Beam shots and then blast them with missiles. Mochtroids, which look like Metroids, are weaker, with fewer internal nuclei. (Metroid 08/89).

In Super Smash Bros. Brawl[edit]

The Metroid as an Assist Trophy in Brawl.

Metroid is featured in Brawl as an Assist Trophy. When a Metroid is released, it will attempt to latch onto an opponent's head, slightly immobilize them, and sap their health. It can be shaken off by moving about rapidly (or with a simple air dodge), upon which it may seek another victim. It moves in a rather inertial way (like Super Sonic and Volt Tackle), floating about the stage lazily. It can also pass through walls. The Metroid does damage much like a faster version of the flower effect, except that it makes characters flinch - only a few attacks can damage, ones that attack on frame 1 - this makes it very difficult to accomplish anything while being sucked, and it causes CPU opponents to use their up special move repeatedly while attempting to recover. However, if recovery moves like Spin Attack are used repeatedly while a Metroid is latched, they can cause a high amount of vertical movement, possibly even pushing the character past the upper blast line. Like Starfy and Lakitu, Metroid can be attacked, but it will only flinch away a little bit and then attempt to find a victim again. If the victim is KO'd, the Metroid will be KO'd as well.

Trophy information[edit]

The Metroid trophy from Brawl.

A bioengineered life-form found on planet SR388. Metroids attach to organisms and drain life energy. The Galactic Federation commissions Samus to eliminate them, but Space Pirates try to harness their power. One of the few ways Samus can kill Metroids is by shooting them with the Ice Beam and then shattering them with missiles. The Metroid's cry is chilling and indescribable.

NES: Metroid
Game Boy: Metroid II: Return of Samus


Name Game Effect Characters
Metroid Metroid Prime Pinball AttackFreezing+018EffectIcon(Freezing).png Attack +18 All charactersRandomHeadSSBB.png
Metroid Metroid: Zero Mission AttackElectric+020EffectIcon(Electric).png Attack +20 Samus Zero Suit SamusSamusHeadSSBB.pngZeroSuitSamusHeadSSBB.png
Brawl Sticker Metroid (Metroid Pinball).png
(Metroid Pinball)
Brawl Sticker Metroid (Metroid Zero Mission).png
(Metroid: Zero Mission)

In Super Smash Bros. 4[edit]

A Metroid in Smash Run.

The Metroid returns in both versions of the game as an Assist Trophy, functioning the same as in Brawl.

In Smash Run[edit]

Metroids appear as enemies, exhibiting the same behavior of their Assist Trophy incarnation. True to the Metroid series, they can be defeated more easily with ice attacks.

In Smash Tour[edit]

A Metroid can appear as a random event. It wanders around the board and steals stat boosts from the first player that touches it: whoever catches it can then retrieve the stolen stats. Retrieving one's own stolen stats is one of the Challenges.

Trophy information[edit]

Trophy in for Wii U.
Trophy in for 3DS.
ntsc First discovered on planet SR388, this floating life-form grows by absorbing the energy around it. It is incredibly durable but extremely weak to cold. In Smash Bros., a Metroid will grab a rival by the head and drain energy. If you get grabbed, shake it off by pressing left and right!
pal Mysterious floating life-forms, discovered on the planet SR388, that absorb energy from other living beings. They're tough, except when they're cold. In this game, they'll try to attach themselves to fighters' heads and drain their energy. Press all the buttons you can to shake them off!
NES: Metroid (08/1987)
Game Boy: Metroid II: Return of Samus (11/1991)

In Super Smash Bros. Ultimate[edit]

The Metroid returns once again as an Assist Trophy, functioning the same as in the previous installments. However, it can now be defeated with freezing attacks, like in Smash Run.

The Metroid larva, using its official artwork from Metroid: Samus Returns, appears as a Spirit.



  • The Metroid trophy in Melee has an image hidden within the interior of its "shell", which can be viewed with proper manipulation of the Gallery's camera; the texture shows the image of a lab station in the Ceres Space Station in Super Metroid, with the infant Metroid also visible.
  • A small Mr. Saturn sprite is hidden in the texture of the Metroid Assist Trophy in Brawl. It cannot be seen in-game.

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