Number Three/D’Anna Biers, Battlestar Galactica
Number Three/D’Anna Biers (Lucy Lawless): In the popular reboot of the classic Battlestar Galactica sci-fi series, D’Anna (aka female Cylon Three) engaged in a sexual affair with both Gaius Baltar and Caprica Six, and claimed to love both. However, in Season 3 episode 11 “The Eye of Jupiter”, she ended the relationship with Caprica Six, and planned to leave with Baltar, claiming they have different destinies.
In Season 4, Episode 11, having fallen into despair at the discovery of a dead Earth, the last of the Three Cylons chose to stay and die on the planet.
- 16 episodes. Season 2: 2x8, 2x18. Season 3: 3x01 -> 3x08, 3x10, 3x11. Season 4: 4x09 -> 4x11
Female love interests:
- Number Six (Tricia Helfer, main cast 73 episodes)
Relationship story arc with a woman: No
Male love interests:
- Gaius Baltar (James Callis, main cast 73 episodes)
Relationship story arc with a man: No
Filter Relationship Arc:
Storyline during sweeps? Yes, episode with threesome between Six, Three and Baltar was aired during November sweeps
 A relationship story arc is defined as explicit, developed on screen, and lasting more than 3 episodes. It is listed as questionable or subtext if romance is only implied, mentioned instead of shown on screen, part of a dream sequence, or otherwise not explicit for the viewer.
 Sweeps episodes air in February, May, July and November, the periods when advertising rates are set. A character is marked as "sweeps" when there is a very limited number of episodes that address their sexuality, all air during sweeps period, and the storyline is otherwise ignore/dropped.