About me: (Needless to say a HUGE W.I.P.)
Sin has been called many things, but a**hole seems the best fit. He was created with the intent and purpose of finding all the answers for Atlantis. What are all the answers your wondering? Well to put simply ALL the answers. The keys to everything one could need, God's blueprints for the universe, what role if any humanity plays in this grand scheme of life. The answer to life, morality, is morality set in stone? Is their such a thing as fate, freewill? These are all things that bugged Atlantis and they sought nothing less than these answers, but it wasn't to quench a thirst for knowledge, no like many pursuits, this was to subdue a great fear.
While Atlantis was advanced in the ways of Science, Medicine, Alchemy and Philosophy, they feared one thing more than others, death. The death of not themselves but of their nation, the shining pillar of the ancient world. What if nothing was left of their greatness? No one to appreciate the art, the advances they made? This fear lead Atlantis into many wars, not for the fact of warfare, but in the hopes of subduing other cultures so their own could thrive. Needless to say the fact that they were killing countless languages, arts, customs, cultures of other people was lost on Atlantis. While preparing for another Invasion something caught their ears. This rumor marked the beginning of the end for Atlantis.
The kingdom heard of Xerxes and there little man in a battle, unlike them Atlantis had technology and thus Sin was placed in a body. With his body in place he opened the gate. Thus the city that feared death, that wanted to live forever was now sunken to the sea, forever lost as nothing more than a myth for fools. Unlike his other Humonculus he doesn't complete despise humanity. He still refers to them as oversized apes, still they have potential. He views his other Humonculi as less than scum, being stuck on some grudge and unable to choose their own destiny. Sin tends to stick to the underworld, his hobbies include experimentation (On humans, among other things.) Drinking, killing, finding secrets along with solving said ancient secrets, beheadings, and any field of science, though he prefers the realms of botany.