According to Comic Book Movie on Sunday, Patrick Brennan from "The Twilight Saga: Breaking Dawn – Part 2", will be making his way to ABC's "Marvel's Agents of S.H.I.E.L.D.: The Only Light In The Darkness". His alter ego is Blackout with his real name being Marcus Daniels.
The clip shows Blackout walking on what appears to be a pier with a series of parked fishing or crabbing boats. As he makes his way past light posts, they black out one by one. As he passes a boat, its entire power goes black. He spots a crabber/fisherman loading up his truck. Blackout asks for a ride, but considering the location, the crabber said that would be unlikely. As a result, the villainous newcomer absorbs all life from the poor crabber and commandeers the vehicle. There's a close-up shot of a bracelet of some sort that seems to indicate where he was likely kept.
That being said one could speculate he's one of the many superhuman beings that had been broken out of S.H.I.E.L.D.'s" Fridge by Agent Garrett, played by Bill Paxton and Ward, played by Brett Dalton. This is not unlike how villains make their way into the world via "The Dark Knight's Rises" Arkham Asylum-style jail breaks where the bad guys infest the world of Gotham. So it would seem that this is the first episode revealing such incarcerated villains causing a rather large challenge for well known world police.
At this point in the series, S.H.I.E.L.D. members of erased their identities from the network, gone rogue, and sought refuse in one of very few safe houses in existence. Patton Oswalt, who plays Agent Eric Koenig, welcomes the wayward group onto the site considering how the events from Marvel Studio's "Captain America: The Winter Soldier" has left everyone in a mad scramble or "power grab" between themselves and Hydra.
There are only three episodes left and Agent Phil Coulson hopes to assist in reacquiring the governmental entity so they won't wind up eternally as "Agents of Nothing". ABC's "Marvel's Agents of S.H.I.E.L.D." airs every Tuesday night at 8 p.m EST.