Nathan Fillion is in Halo 5 watch the Cinematic here

So far Microsoft has been sparse on the story details of Halo 5: Guardians. However, from the their recent E3 conference and subsequent trailers we know that Master Chief has been missing for a while and an elite group of Spartans has been sent in to locate him or figure out what happened.

Nathan Fillion reprises his role as Edward Buck, first seen as an Orbital Drop Shock Trooper in Halo: ODST, now returning as a Spartan-IV super soldier.

Halo 5: Guardians will be released for the Xbox One on Oct. 27.