alright, here is a list of the Season 1 characters:
Tempus Delve- The Force has given this young Jedi Master the ability to travel through time and see the future.
Jempa- Tempus Delve's Whipid Padawan feels he hasnt been given much attention by his master.
Commander Greco- This clone commander is in charge of all ARC Trooper activity and has been given the responsibility of keeping some of master Delve's darkest secrets.
A'Sharad Hett- The famous Tusken Jedi from the comics is also one of Master Delve's closest buddies. He finds himself in the middle of very important matters.
General Cii- This Abyssin general seems very plain at the beginning of the season but slowly proves to be one of the more powerful characters in the series.
Kelloth- Kelloth has been missing on Rhen Var for months, but when he is found he has become powerful and dangerous. He is also Tempus Delve's former Master.
Count Dooku- What would any series involving the Clone Wars be without Count Dooku? Dooku is sending a powerful agent to do his dirty work. And when I say dirty work, I mean DIRTY.
Boba Fett- Boba has been sent by some1 not to be named yet to kill Kelloth, but also has a score to settle with Mace Windu for killing his pappy.
Chian- Jempa's buddy. He's that whole 'example of the kid thats better off' to Jempa.
Palps/Sidious- All I will say is that Tempus Delve is on to him.
Anakin Skywalker- Tempus will have visions of Vader and take them to Ani later in the season. Also things are getting a bit shaky between him and an Hett, for obvious reasons.
So, theres basically the main characters of Season 1, though there may be more characters throughout the series. Also, expect some cameos by familiar faces.
Some pics should be coming soon. look for the first chapter of Tempus in March.