Board Thread:Spoilers/@comment-26500342-20151214232944/@comment-26247132-20151219205353

Echo was the Ice Nation grounder Bellamy met in Coup de Grace and then freed in BMHB1. From the trailer, there's a clip where it looks like Bellamy might be siding with the Ice Nation. There's also another clip where Bellamy and Octavia are roaming around with flashlights with some others and it's been suggested one of them might be Echo (or Abby or Caris).