343 Industries showed the full Halo 4: Forward Unto Dawn trailer at Comic-Con this week in San Diego, and Microsoft has it available for view now. It's pretty awesome, but you don't need to take our word for it.
The teaser a couple weeks back setup the UNSC theme for us with its chant, and in the full trailer, we're introduced to the characters who will be appearing in the series -- including Chief himself. Check it out.
The guys and gals that appear in Forward Unto Dawn won't be stuck in the live action series either; the protagonist, for instance, appears in actual Halo 4 game as an officer aboard the UNSC Infinity.
Forward Unto Dawn trailer - YouTube
Expect the series to begin October 5. And yeah, Chief's actor really is that freaking tall.