I think Nebuchadnezer had a very nice list of possible characters:
Nebuchadnezer wrote:1. Rheagar Targaryen
2. Robert Baratheon
3. King Aerys II
4. Eddard Stark
5. Jon Arryn
6. Jaime Lannister
7. Mace Tyrell
8. Jon Connington
9. Hoster Tully
10. Grand Master Pycelle
11. Varys
12. Tywin Lannister
13. Some other minor house (Frey, Greyjoy)
(I could see only one character of the small council, so maybe Frey and Greyjoy are both in.)
I see the blue as "rebellion", red as "loyalists", green as "will choose" and orange as "survivor." I could also see only a few chosen people to be masoned...possibly Robert/Eddard and/or Rhaegar/King Aerys.
From what I read in the prologue, I pulled the following names:
Leliana (Might just be part of the narration?)
Leliana's Uncle (Might just be part of the narration?)
Aerys the II Targaryen (Slightly mad, not on the throne)
Rhaegar Targaryen (Crown Prince)(Kidnaps Lyanna Stark)
Lyanna Stark (betrothed to Robert Baratheon)
Robert Baratheon
Brandon Stark (Tries to recover Lyanna Stark)
Eddard Stark
Note: Lyanna Stark and Brandon Stark are not on Nebuchadnezer's list.
Things we know from the prologue:
There is no more in-fighting between Targaryens. (All Targaryens are allied in this game.)
Aerys the II Targaryen demands (present tense) the heads of Robert Baratheon, and Eddard Stark. (Presumably, he already has the head of Brandon Stark (Who was caught attempting to recover Lyanna Stark)
So I would submit this as a list of
known characters in this game.
*Aerys the II Targaryen
*Rhaegar Targaryen
*Lyanna Stark
*Robert Baratheon
*Brandon Stark
*Eddard Stark