CWBorne: Interesting approach to crafting "the gang" of main characters, as representatives of broader social and cultural movements that the galaxy is going through.
I've concentrated the most on characterizing my protagonists, Anakin and his final apprentice, Ben Cortel...
Ben Cortel - the overall protagonist of the series (moreso in Episodes II and III, sharing a lot of screentime with Anakin in Episode I). Ben starts out as the captain of a smuggling freighter, down on his luck because no-one wants to conduct business with the looming threat of a galactic war.
Through a twist of fate, Ben encounters the Jedi Knights, where his latent Force-sensitivity comes to the fore and allows him to perform superhuman feats. Ben initially feels no loyalty to any higher authority, holding the same jaded worldview that Han Solo has in the OT. Later, though, he realizes the worth of the Jedi and the Alliance to Restore the Republic.
Ben is tragically cut down in the climactic battle of Episode III. His sacrifice was not in vain, for he provided that all-important first spark of defiance against Imperial rule. Ben's sacrifice led to Obi-Wan Kenobi honoring the Jedi's memory by adopting his name as an alias.
Ben is a half-Chiss, half-Epicanthix male in his late twenties.