Sin



Sin is a gargantuan beast which threatens the world of Spira in Final Fantasy X. It was given the name by the people of Spira who believed that the beast was created by the sins of their forefathers due to their use of technology and Machina, which culminated in the Machina War between Bevelle and Zanarkand. It is the primary antagonist throughout the storyline of Final Fantasy X.

Background
For one thousand years Sin had roamed Spira with one purpose: to bring destruction to technology. Sin was discovered to be the armor of Yu Yevon by Yuna and her guardians. For countless generations there was only one known way of destroying Sin: a Summoner has to go on a pilgrimage to the ruined city of Zanarkand. There, the summoner must offer one of his guardians to Lady Yunalesca, an unsent who was the first summoner to defeat Sin, so she may forge the guardian into a powerful aeon known as the Final Aeon, one with enough power to destroy Sin. But there was a flaw: although the outer shell that is Sin would be destroyed, Yu Yevon would possess the final aeon to create a new Sin consisting of the soul of the sacrificed guardian as its core. A period of time would then pass where this "baby Sin" would grow and not threaten the citizens of Spira. This period, which is variable in length, is known as the Calm.

Additionally, the summoner dies after destroying Sin. Contrary to popular belief, this is caused not by the Final Aeon itself attacking the summoner but by the fact that a summoner must give his or her very life energy to evoke the Final Aeon into being. It was also believed that it may be the actual possession of the Final Aeon by Yu Yevon. The strong mind link the summoner and the final aeon share is instantly severed which is the act that results in the death of the summoner. Seymour Guado desired to use this to his advantage by attempting to wed Yuna so that when they reached Zanarkand, Yuna would make him the fayth of the final aeon and eventually Sin. By doing this, Seymour could "end" the suffering of Spira by destroying all of its inhabitants.

Sin and the events of Final Fantasy X
High Summoner Braska, accompanied by his Guardians Jecht and Auron, were the latest in a line of summoners who completed the final summoning and destroyed Sin. Braska used Jecht for the Fayth in the Final Summoning, in effect turning Jecht into the new incarnation of Sin. After the traditional period of Calm, Sin returned to wreak havoc on Spira. A new generation of summoners assembled and began their respective pilgrimages to Zanarkand. One of the summoners was Braska's daughter Yuna. Meanwhile the Al Bhed attempted to create machina that would defeat Sin, allying themselves for the first time with the organization of warriors against Sin — the Crusaders, though they were excommunicated for the alliance. Their cooperative attack, known as Operation Mi'ihen, was an utter failure, and many of both the Crusaders and the Al Bhed were killed. Sin overpowered the machina and destroyed it, and the Crusaders who weren't slain battling the Sinspawn were disintegrated by Sin's ultimate attack.

Yuna and her guardians, including Tidus, meanwhile uncovered the plots of Seymour. When Yunalesca revealed the true nature of the Final Summoning, the party decided to aim for an endless Calm by killing Sin's core, Yu Yevon, once and for all. Yuna led her guardians inside Sin after incapacitating its outer defenses, and they met and defeated the embodiment of Jecht, releasing Yu Yevon. After possessing each of Yuna's aeons, Yu Yevon runs out of body shields and is forced to confront the party face-to-face. After being defeated, Sin is permanently destroyed and the Eternal Calm starts.

Sin and the events of Final Fantasy X-2
Sin does not actually appear in Final Fantasy X-2, having been truly destroyed two years prior to the beginning of the game. But the game prominently shows the rarely-explored side of the quest to save the world: for the first time in a millennium, people need no longer fear Sin. Now the inhabitants of Spira must figure out what to do with their freedom. Another important plot revolves around Vegnagun, an incredibly ancient machine, designed one thousand years ago for war. Vegnagun is the single most powerful weapon ever created. It is unknown how Vegnagun would have faired in a battle with Sin, although based upon Sin's monstrous power, it seems likely Vegnagun would lose (Vegnagun's main cannon seemed capable of nuclear weapon-level force, able to destroy an area the size of the Calm Lands. However, Sin's Terra Graviton attack was visible from orbit, tore flaming cracks through the planet's crust, and was even creating a noticeable gravitational pull on the moon. This implies far greater power). More importantly, however, is the fact that Vegnagun could not differentiate between friend and foe, and so, even if Vegnagun had somehow defeated Sin, it itself would have just proceeded to ravage Spira, which is the reason why it was never used. Now, just as the Eternal Calm is beginning, a shadow from the past named Shuyin, who hates all of creation, wants to activate Vegnagun to bring destruction upon Spira. With Sin dead, no power on Spira is strong enough to stand up to an activated Vegnagun, and the ancient weapon would surely bring complete annihilation on all civilization.

Sinspawn
Sin could create smaller creatures, Sinspawn, from its outer layer. Coming in a variety of shapes and levels of power, the Sinspawn cause trouble for any person that crosses them until Sin arrives and reabsorbs them.


 * Sinscales: Generic Sinspawn.
 * Ammes: A Sea Anemone-like Sinspawn.
 * Echuilles: A Jellyfish-like Sinspawn.
 * Geneaux: A Sinspawn found at the entrance of Kilika Temple, hiding inside a tough shell.
 * Gui: A Fusion of various Sinspawn gathered by the Crusaders for Operation Mi'ihen.
 * Genais: The absolute strongest Sinspawn, with the same shape as Geneaux.

Within Sin
When Sin's armor is penetrated in the final events of Final Fantasy X, the party passes through several areas in order to reach the final stronghold of Yu Yevon:
 * Sea of Sorrow - A haunting, red-tinged sea winding through the landscape.
 * Garden of Pain - Where the battle with Seymour Omnis takes place. Once he has been defeated, this area is bypassed on all trips through Sin.
 * City of Dying Dreams - A maze of moving platforms and teleport glyphs which must be navigated. Various side paths lead to treasure chests containing weapons and items.
 * Tower of The Dead - As you walk forwards towards what looks like an exit to this area, a large, metal tower falls in front of you: touching one of the glowing glyphs, you are transported to...
 * The Nucleus - A surreal environment; the goal is to touch the colored crystal which moves around the tower at random. The camera angle is always moving, adding to the disorientation. Touching the crystal 10 times transports you to the next area, but touching the icicles which sprout from the floor will cause a battle to begin.
 * Dream's End - On a platform overlooking Zanarkand, the party meets Jecht and fights Braska's Final Aeon. When it has been defeated, Yu Yevon reveals himself, searching for a new Aeon to possess.

Monsters within Sin

 * Ahriman
 * Exoray
 * Wraith
 * Gemini
 * Demonolith
 * Adamantoise
 * Varuna
 * Great Malboro
 * Behemoth King
 * Land Worm
 * Barbatos

Sin