Seth is the AI CEO of the weapons corporation S.I.N. and has altered himself using highly advanced technology, which has changed him on a seemingly structural level and made him much more than human. Having collected data on some of the world's best fighters, Seth borrows moves from a number of different characters to create a fighting style of his own. Seth is intent on completing BLECE (Boiling Liquid Expanding Cell Explosion), which spurs the creation of a new fighting tournament. 