From the first Arpygi. You know them by now, but I'll take it from the top anyway.
Master Syris: The old soldier in charge of the Helo Satellite.
Citris: Assigned to assist Jaden by the King of Arpygi Castle himself.
Jaden VI: A swordsman without equal. Your blank slate.
Labour: Recruited from a mining faculty in the present time.
Talia: Part of a warriors clan dedicated to the 'Hero Of A Lost Land'.
Kurigari: Betrayed his brother in order to assist the Revolving Light and save the world.
Ciot: A brash and angry young man with a healthy love for his bazooka
Jack: Vigilante of Elatzion City who joined the Revolving Light by choice
Relix: The inventor of time travel and the primary reason Jaden, Talia and Citris ended up in the present time.
Forvito Jaden: First appeared attempting to kidnap Jaden VI. Stayed to help see Jaden's mission through to the end.
Ember: Former general for the Steam Entity, memory was erased by the Steam Entity upon her defeat, taken in by the Revolving Light.