Cruxis

A lot of Tales of Symphonia's plot is based around the workings of Cruxis and their leader, Yggdrasil. The whole twisted mess is actually a big part of why I (personally, of course) enjoy the game's story so much. Your perspective of Cruxis changes so many times over the course of the story -- as you progress further, you learn more and more about this organization that practically owns the world and does whatever it wants with it. And when it comes down to it, its goals are for a shockingly personal reason.

This section is dedicated entirely to Cruxis and the actions they performed under Mithos Yggdrasil's orders. Many major plot points go back to their secrets and conspiracies, so understanding Cruxis is key to understanding much of the story. For a more general look, try the Plot section.