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Flaahgra is an enormous mutated plant-like creature in Metroid Prime and is the main boss of the Chozo Ruins.


That which fouls the waters seeks the sun.


Flaahgra was likely once an ordinary plant, perhaps even a sacred one, as it had the honor of being the Chozo's centerpiece flower in their city's Sunchamber on Tallon IV. However, the destructive Phazon mutated it beyond all recognition, resulting in this monstrous beast.

Flaahgra extended its vile roots to all corners of the Chozo Ruins, and began to secrete a poison which tainted the waters of the Ruins. The water was so toxic and corrosive that it dealt damage to Samus on contact, though it was completely cleansed the instant Flaahgra was defeated.


Samus battles Flaahgra.

Flaahgra begins the battle with one solar panel active. If Samus can disable it with Missiles or Charge Beam shots, she can switch off the Mirror Arrays that give Flaahgra the sunlight from FS-176 that it needs to stay active and functional. The creature can use its scythe-like limbs to flip over the arrays that Samus has disabled to restore power to them if she is too slow to shut off all of them. When all solar arrays are shut off, Flaahgra will collapse and its four spiked Tentacles retract into the large flower's base, allowing Samus to enter Morph Ball-sized tunnels previously occupied by the Tentacles. Once she reaches a Morph Ball Slot located on the outer edge of the creature's base, she can Bomb it, causing damage not only to Flaahgra's central nervous system, but also igniting the flower with the surge of electrical energy. After the blow has been dealt, the upper body of the Flaahgra will writhe, wilt and retreat into the main flower. Seconds later, however, the solar panel(s) powering it will reactivate, plus an additional one (starting with one, with a maximum of all four panels being lit at a time), causing the Flaahgra to emerge a few seconds later, larger and angrier than ever.

In terms of physical offense, Flaahgra can slash with its enormous scythe-like appendages, performing a brutal swipe or two each time it decides to do so. If Samus takes too long to reach the Bomb Slot inside one of the four tunnels, not only will she be pushed back out by one of the Tentacles, but Flaahgra will awaken (due to the reactivated solar panels) and furiously perform an almost 360-degree slash across the floor of the entire room. Each of Flaahgra's four Tentacles are covered with thorns and will flail at Samus if she gets near them.

Its long range offense consists of spitting out small and large energy spheres. While the small ones are quickly spat out in different waves, the large energy sphere requires a moment to charge before being launched, though the process can be stopped if Samus shoots a Missile or Charge Beam shot at the creature's head. Flaahgra can also spray a substance that spawns a temporary wall of corrosive plants along the floor from the central pond to the nearest wall of the room. This wall occasionally proves impossible to jump over, hindering Samus' progress if she was on her way to a Mirror Array.

Lastly, the central pond surrounding the boss is extremely toxic and acts as a defense in a fashion similar to a moat protecting a castle. It is from here that all the polluted water is distributed throughout most of the Chozo Ruins.

Due to its exposure to the sun's concentrated energy, the outer shell of Flaahgra has become resilient enough to withstand harm from most weaponry, thus no matter how many shots are fired directly to the head and body, it will only be temporarily stunned, and can only be truly harmed by bombing its central nervous system. However, stunning its main body proves to be useful, as it not only allows Samus to disable the Mirror Arrays without being attacked, but also prevents Flaahgra from reactivating said Mirrors. After all four trenches have been bombed, the herbaceous monstrosity dies, and the Chozo Ruins' water supply returns to its normal, unpolluted state.

Concept art

Official data[]

Official website[]

"Flaahgra is a massive plant-based life-form with a snake-like body and powerful arms. It gains its strength from sunlight. The tentacles it uses to attach itself to the ground are also used to absorb water. The creature's mutated hydration system pollutes the water source with noxious excretions, creating the perfect environment for Flaahgra's growth and nourishment. Flaahgra is extremely territorial, and will viciously attack any intruders."

Its central nervous system is located near its base, where sprawling tentacles are tightly affixed to the ground."

Logbook entry[]

Flaahgra flower scanpic.png Flaahgra sunlight scanpic.png
Flaahgra head scanpic.png


Temporary scan

Morphology: Flaahgra
This mutant plant is the source of toxic water in the Ruins.

Logbook entry

Flaahgra's growth cycle has been radically accelerated. As a result, it requires near-constant exposure to solar energy to remain active. This exposure has made Flaahgra's outer shell thick and durable. Concentrated weapon fire can daze it for short periods, but its lower root system is unprotected and vulnerable, however. Exploit this flaw when possible.

Mike Sneath interview[]


Flaahgra is the first boss character that Andrew Jones concepted. This creature was a lot of fun to work on because Andrew did about five variations for the creature. There was the ‘core’ concept, but I ended up taking a few other details from the other variations Andrew created. Todd Keller created a concept for giant plant flower that Flaahgra sits inside of. The first version of this boss had all the tentacles as part of the plant. Later the designers decided to detach the tentacles and make them more part of the room like you see in the game. The room and creature sort of evolved together as the designers worked their way through how this boss character would play out.

—Mike Sneath[1]


Flaahgra beta.gif

An early animation reel of Flaaghra displays it in an open swamp, rather than the enclosed chamber where it is encountered in the final game.


The cries of this dying land echo in our ears as we Chozo watch the Great Poison seep ever further into the living pulse of the planet. The dark energy sinks into the trees and waters, devouring all life. Peaceful beasts die by the thousands - some creatures survive, but their forms grow as twisted and evil as the force that fell from the sky. Many of these mutated monstrosities remain small enough to do little harm, but others grow enormous and threaten our very existence. One such beast defiles our sacred fountain, disgorging poison from its foul form, replacing pure, flowing water with cascades of creeping death. Even in the face of such horror, we Chozo do not turn in fear. We are all that stands in the way of this Great Poison, and it is our duty to contain it.

—Spreading Evil - Chozo Lore


  • Upon closer inspection of Flaahgra's head, green butterflies can be seen flying in close proximity to its mushroom structures. These can be seen when the boss collapses from lack of exposure to the sun's energy.
  • Before entering the Sunchamber, an unscannable pink Holobanner in Flaahgra's likeness can be seen.
  • The energy spheres Flaahgra fires, in particular the large variant, heavily resembles a charged Power Beam shot. It can be looked upon for closer inspection when the projectile hits the wall, as it will remain "stuck" for several seconds.
  • Flaahgra may have originally been a large Bloodflower before it was heavily mutated by Phazon, due to the similarities the boss shares with it, specifically Flaahgra's base resembling a Bloodflower, both plants having tentacle-like roots, and the fact that both spew toxic orbs.
  • In the original NTSC version of Prime, Flaahgra's theme was incorrectly shortened to only a third of its intended length. The full theme can be heard in the PAL and Japanese versions of Prime, and the Wii versions retain the full rendition of the theme.[2]
  • If Samus Sequence Breaks by surviving the Magmoor Caverns without the Varia Suit, she can return and battle Flaahgra with a full arsenal. The Bomb Slots can be detonated with Power Bombs[3], and Flaahgra can also be damaged with the Wavebuster.[4]
  • Likewise, if Samus obtains the Space Jump before facing Flaahgra, she can detonate the Bomb Slots from the outside by space-jumping onto Flaahgra's platform and laying bombs before sliding off.
  • Flaahgra, along with the Parasite Queen, are the only major bosses in Metroid Prime that do not appear in Metroid Prime Pinball.
  • The massive sea beast Rastodon on the ocean world in chapter 6 of Metroid EX was similar to Flaahgra, although it poisoned an entire ocean and not just a spring. Despite this, destroying it also purified the water.
  • Jack Mathews joked that Flaahgra's name means "boss plant" in Aramaic.[5]
  • Flaahgra and it's corruption by Phazon is indirectly referenced in Dark Samus's Classic Mode route The Great Poison Given Form, more specifically the fourth battle, where she teams up with Ivysaur in a double-match.



  1. ^ Shinesparkers "Interview with Mike Sneath" November 6, 2010. Retrieved February 9, 2021.
  2. ^ Version Differences: Flaahgra. Retrieved on 2009-08-07.
  3. ^ Purple Samurai "Metroid Prime - Using Power Bombs to Detonate One of Flaahgra's Bomb Slots". YouTube. February 19, 2022. Retrieved February 19, 2022.
  4. ^ Purple Samurai "Metroid Prime Boss Trick - Killing Flaahgra with the Wavebuster". YouTube. February 13, 2022. Retrieved February 13, 2022.
  5. ^ Mathews, Jack (jack_mathews). "Flaahgra is “boss plant” in Aramaic." 10 October 2018 6:47 p.m. Tweet.