Sin (Final Fantasy)

"Sin is our punishment for letting things get out of hand."

- Wakka about Sin.

Sin (シン, Shin) is a gigantic, demonic monster and a major antagonist in Final Fantasy 10.

This malevolent creature wreaks havoc on the world of Spira. The only way to defeat Sin is to turn someone into a Fayth, and have them attack Sin. This, however, is only a temporary fix, as Sin will resurface 10 years later, because a being known as Yu Yevon will use the Fayth to create a new Sin, which acts as it's armor. In the game, Tidus discovers that the newest Sin was his father, Jecht. Jecht can control Sin, but only when he hears the Hymn of the Fayth.

As Sin moves it drops destructive Fiends known as Sinspawn in its wake, which are actually small parts of itself - if left for too long these Sinspawn will not only cause havoc in the lands they inhabit but will act as beacons for Sin, who will return to claim its "young" and destroy anything in its path in the process.

At the end of the game, Tidus and the party enter Sin after fighting him and destroy Yu Yevon. Yuna is then able to send Sin, ending its threat once and for all.