"Sometimes when I close my eyes, I can't see."
Well turns out the new character in the poster, Agent Locke, WILL be playable in Halo 5. Here is the source: http://www.ign.com/articles/2014/07/...lo-5-guardians
Also Halo: Nightfall is Locke's back story. This series is produced by Ridley Scott and has that Alien feel to it. The series takes place on the remains of Installation 4 from the very first Halo game. Here is the first trailer: