ORN Faust is one of the main villains in the Thunder Force series, appearing since Thunder Force IV. It is a robot that controls Vios, acting as a second-in-command to the ORN Empire's forces. After Khaos's initial defeat, Faust gathers the remaining ORN forces into Vios and strenghtens it's military, launching various attacks against the Galactic Federation. The Galactic Federation sends the Fire LEO-04 "Rynex" to fight Vios forces, eventually destroying the Cerberus MK-II battleship. Faust emerges from it to fight Rynex,and though Rynex was unable to damage it, Faust retreats after a fleet of Fire LEO-03 "Styx" comes to aid Rynex, upgrading it's weaponry. Rynex pursues the Vios forces, eventually facing ORN Faust in the Vios Fortress, where it takes advantage of the huge cannon mounted o