Metroid[a] is a series of nonlinear science fiction action games published by Nintendo, featuring side-scrolling, metroidvania, and first-person shooter elements.
The player character and protagonist of the series is Samus Aran, a space-faring bounty hunter who battles Space Pirates and a species called the Metroid.
Her homeworld was attacked by the Space Pirates, and her parents were murdered by their leader Ridley when she was young, which led to her being taken in by the Chozo, who saved her life and raised her to become a warrior.
Lore found in Metroid Prime 3 specifically mentions a fellowship of enlightened races that once existed between the Chozo, the Luminoth and two other species known as the Reptilicus and the Ylla.
[1] The Chozo were also responsible for raising Samus, infusing her with their DNA and creating her Power Suit, and for the creation and breeding of Metroids to combat the X Parasites.
"bird-folk race"), a misunderstanding during the localization process led to the mistaken adoption of the descriptor chōzō (鳥像, "bird statue"), rendered "Chozo", in the English versions instead.
In Super Metroid, some of the Chozo statues would rise up and attack Samus; these bosses are called Torizo, substituting the native Japanese word tori ("bird") for the usual, Chinese-derived chō.
One Mawkin soldier, however, was infected with an X while returning to ZDR and a pandemic broke out, leaving Raven Beak and Quiet Robe the only known living Chozo when Metroid Dread takes place.
The Galactic Federation (銀河連邦, Ginga Renpō) is the governing body of the galaxy formed by an alliance of alien species[3] and often contracts Samus with difficult missions to complete, which typically make up the majority of the games.
[5] Created by the Chozo as a type of bioweapon in order to combat the more dangerous X Parasites, they are one of the primary plot points in the Metroid games as Samus either fights them or tries to prevent the Space Pirates or Galactic Federation from harnessing their powers for evil.
[12] As MB gained emotions of her own just like the original Mother Brain once did, the scientists decided to reprogram her AI, something Madeline was initially opposed to but ultimately accepted when faced with the dangers of keeping her active.
[13] Madeline rejecting her safety and the discovery of the Galactic Federation's initial military purposes for her caused her to have a meltdown, which inadvertently led to the remaining Mother Brain DNA within her corrupting and controlling her software, and she forced the Bottle Ship on a collision course.
A hostile group known as Space Pirates (スペースパイレーツ, Supēsu Pairētsu), or Zebesians (ゼーベス星人, Zēbesu Seijin), serve as the antagonists of the Metroid series.
They are a group of "interstellar nomads" resembling humanoid reptiles, insects, or crustaceans who plunder colonies and ships and exist in an insect-like hive society.
[15] Ridley (リドリー) is the archenemy of Samus Aran, an intelligent and sadistic dragon-like entity that despite being killed multiple times by her, is always revived by the Space Pirates (or accidentally by the Galactic Federation in Metroid: Other M) using cloning or robotics.
He is directly responsible for the invasion of Samus' home planet and the death of her parents and is the franchise's most frequently recurring villain, though he doesn't typically act as the primary antagonist in individual games.
[21][22] It caused severe damage to the Chozo colony before the Artifact Temple was built to contain Metroid Prime inside the impact crater of the Leviathan.
[23] Metroid Prime broke free and managed to assimilate several weapons and defense systems from fallen security units before going back to the impact crater.
The presence of Samus derails James' mission, though he does manage to kill several members of Adam's squad before he himself was found dead in the Bioweapons Research Center: it can be surmised that he tried to eliminate MB, but failed.
Additionally, an unnamed GF colonel who orders MB's destruction and attempts to force Samus to handover Madeline Bergman using the fact she is an outsider to force her to comply is implied to either work for or a top ranking member of the group and may have been the one responsible for sending the Deleter to eliminate Adam and his team before they could uncover and expose their bio-weapons research as he is a member of the Galactic Federation military.
These enhancements allow Samus to defeat the Omega Metroid and escape the B.S.L., which then crashes into SR388, destroying both and therefore killing all the X Parasites aboard the station and on the planet.
units to ZDR to investigate signs of X Parasites, he hijacks them by ordering Quiet Robe to commandeer them, planning to exploit their ability to harvest genetic information.
When Samus arrives on ZDR, Raven Beak fights her, gaining the upper hand even at her full power, but when her Metroid abilities initially manifest themselves, he leaves her alone, sparing her.
On the brink of death, he is infected with an X Parasite, turning into Raven Beak X, a massive monster resembling Kraid who was previously killed and absorbed, with a radially symmetrical mouth that contains his head.
In Metroid Prime 3: Corruption, he sought the help of bounty hunters Samus, Rundas, Ghor and Gandrayda against the Space Pirates who are waging war on Federation using Phazon.
In the beginning of this game, he is shown to be arrogant, but nonetheless willing to help his fellow hunters, as evident by him saving Samus from Meta Ridley during the battle on Norion.
An alien of unknown origin, he has replaced 94% of his birth body with cybernetic prostheses as a result of injuries suffered in the liberation war of Wotan VII.
When she succumbs to Phazon corruption, she retains her playful nature, but becomes far more vicious and calculating while her shapeshifting abilities are further enhanced, making her a dangerous boss opponent.
A soldier assigned to Adam's platoon, and an old acquaintance of Samus', he was the squad's point man, and carries a plasma gun which a massive damage to creatures but takes a long time to recharge.
After Raven Beak's defeat, however, the undead Quiet Robe returns to allow Samus to escape the planet on her ship without draining its energy with her Metroid abilities.