Editing Leviathan

Samus first encounters [[Phazon]] and a Leviathan's work in ''[[Metroid Prime (game)|Metroid Prime]]'' decades after the Tallon Leviathan lands.<ref name="Tallon IV Incident">{{cite|Planet Tallon IV, formerly a Chozo colony, was struck by a stellar object 50 years ago. Object was later determined to contain large quantities of Phazon. The Chozo were able to stave off the spread of Phazon, at the cost of many Chozo lives. The survivors abandoned the planet, fleeing to an unknown location. Decades later, Hunter Samus Aran responded to a distress call in the sector and discovered a Space Pirate Phazon Mining Station there. Aran eliminated both the pirate and Phazon threat from the planet, though not without cost.|[[Galactic Federation Data#Tallon IV Incident|GF Data - Tallon IV Incident]]|[[Metroid Prime 3: Corruption]]}}</ref>. The meteor landed on Tallon IV, spreading Phazon (known to the Chozo as the "Great Poison") throughout its various ecosystems. The Chozo were helpless against the corruptive power of Phazon and could only watch its raw, destructive nature in action.<ref>{{cite|Unforeseen by sages, a meteor came as if from nowhere, casting a dark shadow of debris over the land with the violence of its impact. Its destructive force spent, the fallen star burned itself out rapidly, and the incident should have faded into memory...but the meteor brought with it corruption. A Great Poison burst forth into the land, a strange energy that clawed at natural life with a ferocity that seemed almost sentient. Bound by our ignorance of this phenomenon, we Chozo could only watch in horror as this dark force slowly began to spread across the surface of Tallon IV.|[[Chozo Lore#PAL/Trilogy Version|Chozo Lore - Meteor Strike]]|Metroid Prime}}</ref> Phazon spread, corrupting or killing anything in its path. Phazon attacked any living creature and plant, corrupting even the Chozo, turning their dead to [[Chozo Ghost]]s. These Chozo Ghosts only fiercely protected their land, attacking any, even former friends, who would approach. Despite this, The Chozo did not simply flee the planet. They sealed the Leviathan's [[Impact Crater]] away using the [[Artifact Temple]]. They placed the temple directly above the impact site and sealed it with [[Chozo Artifact|twelve keys]], hoping that one day the foreseen "[[Samus Aran|Entrusted One]]" would unlock the temple and purge the Phazon inside. The temple additionally protected [[Space Pirate|evil]] from obtaining Phazon for selfish use.<ref>{{cite|As the Great Poison reaches ever further into the planet, we Chozo begin to feel the gnawings of despair - before it is too late, we now make our last stand. We have begun to build a temple to contain this darkness; at its heart we will place a Cipher, a mystical lock powered by twelve Artifacts and filled with as much power as we Chozo can harness. We wonder, though - even when we are done, will it be too late? And will the power of the temple, and the Cipher itself, prove strong enough to hold back the poisonous tide that even now swells within the ground, threatening all life?|[[Chozo Lore#PAL/Trilogy Version|Chozo Lore - Cipher]]|[[Metroid Prime (game)|Metroid Prime]]}}</ref><ref>{{cite|To the Entrusted One: if you read these words, then our hope has not been in vain. Your path is fraught with danger - monstrosities beyond description lurk in the shadows, starving, hunting for prey, searching for ways to quench the poisonous urges that bloom in their brains. Some of these are shrewd, but they are blinded by their evil designs: believing in the black promise of the Great Poison, they seek to harness it for their own ends. It is these last that are the greatest danger, perhaps an ever greater one than the Great Poison itself. When you rid the universe of these creatures, you will be the true Entrusted One.|[[Chozo Lore#PAL/Trilogy Version|Chozo Lore - Infestation]]|[[Metroid Prime 3: Corruption]]}}</ref>

After the Chozo sealed the impact crater and either fled Tallon IV or fell to [[Phazon Corruption|Phazon corruption]], Samus arrives on the planet after chasing down the enhanced space dragon [[Meta Ridley]] from [[Frigate Orpheon]], from whence she receives a distress signal, presumably from Pirates as Orpheon was attacked by the creatures within.<ref name="Tallon IV Incident" /> After investigating the planet, Samus learns that Space Pirates were using [[Phazon]] with [[Metroid (species)|Metroids]] and other creatures to create formidable bio-weaponry. It then becomes her mission to destroy Phazon on the planet. She achieves this by finding the twelve Chozo Artifacts and opening the Artifact Temple. Although there is no Leviathan within the core, it is assumed that the creature [[Metroid Prime (specimen)|Metroid Prime]] had taken on its role as the source of the planet's Phazon. Samus enters the [[Impact Crater]] and defeats Metroid Prime using her [[Phazon Suit]] and [[Hyper Beam (Phazon)|Phazon Beam]], overloading the creature.