Here are the dramatis personae that have appeared in The Clone Menace so far. I used a simple browser-based fantasy-themed avatar generator; if you know of any better generators feel free to let me know.
Obi-Wan Kenobi: A Jedi Knight tasked with the defense of the Alderaanian Kingdom from a clone invasion.
Templar Jinn: An elder Jedi and respected colleague of Obi-Wan. He is one of the few individuals alive aware of the existence of another, darker aspect of the Force.
Marya Organa: The only child of King Bail Organa and heir apparent for the Alderaanian throne. Her independent spirit is matched only by her devotion to the ancient Kingdom.
Grant Lars: A star pilot hailing from Tattooine who volunteered to defend Marya's kingdom, hoping to win her back.
Jaster Mereel: The supreme overlord of Greater Mandalore and veteran of countless wars of conquest. Mereel seeks to expand his holdings with the use of a clone army.
Bail Organa: Reigning monarch of the Kingdom of Alderaan and prominent advocate of clone abolition. Ironically he has now fallen under attack by a group of marauding clones from the Outer Rim.