I choose those characters who seem to have premonitions/visions/destinies.
- Kara Thrace, because of her “destiny.” And stupid end. Obviously.
- Galen Tyrol, because he seems to have some strong ties to the Temple of Five and has his own sense of “destiny.”
- Laura Roslin, because she also has some air of the supernatural about her, especially the visions from season 1–though I think she is probably not a Cylon because that would be way too contrived.
- Gaius Baltar, because of his projection ability. However, this is what Baltar wants to be true…so it probably isn’t. Though that leaves the “projection” mechanism unexplained.
…and these are probably safe from being Cylons:
- William and Lee Adama, because the series revolves around “the family Adama” (in Ron Moore’s words). In addition, these two are pretty well established as a biological father-son pair.
- Karl Agathon, because though he meets the “destiny” criterion, Cylons can’t reproduce.
- Ellen Tigh, because although she began with suspicious motives, many of her motivations were revealed in “Exodus, Pt. 1” and they seem essentially un-Cylon.
- Tom Zarek, because that would just be too obvious.