Update:

I've added a bit more specifics on clips of Deathlok, Lady Sif and John Garrett shown to press today.

Mike Peterson is your new Deathlok!

Marvel's Lorelei is coming to Agents of SHIELD.

Viewers of Marvel's Agents of SHIELD have been wondering when the show will introduce some true Marvel superheroes into the mix, and it was revealed by Marvel today that the answer is very soon - in fact, we've already met one.During a visit to the set of the show today, I was among a group of journalists shown footage from an upcoming episode, which revealed Mike Peterson (J. August Richards) is being transformed into the super cyborg Deathlok. It's a longtime payoff for the identity of Richards' character, which had been the subject of discussion since he was first said to be in the pilot of SHIELD early last year. His character, Mike Peterson, was ultimately not anyone familiar from Marvel Comics, ending early speculation he was going to turn out to be Luke Cage or someone else recognizable.However, some fans did ponder if a Deathlok reveal was coming, after we last saw Mike in a very bad state - burnt, missing a leg and with a cybernetic eye implant, after he was caught in an explosion. And indeed, that's exactly who it turns out he will become - a character that works with a previously-unknown alter-ego, given the Deathlok identity has been used for several different people in Marvel comics and is not closely identified with one character. Perhaps the most notable incarnation (certainly the one who had the longest running title of his own) is Mike Collins, the Deathlok introduced in the 1990s, so having Mike Peterson be Deathlok on the series still works as a nice nod to that history. Agents of SHIELD executive producer Jeph Loeb revealed the plan to turn Mike into Deathlok had been there from the beginning, when he was first introduced. Loeb also noted 2014 marks the 40th anniversary of Deathlok's introduction in Marvel Comics (in Astonishing Tales #25), as he makes his first appearance in live action.Deathlok's debut on Agents of SHIELD is the latest in a series of reveals about Marvel characters coming to the series, including Bill Paxton's four-episode arc as SHIELD agent John Garrett (first seen in the Elektra: Assassin miniseries) and a guest appearance from Jaimie Alexander as Lady Sif , from the Thor films.Peterson's incarnation of Deathlok will be seen in the next Agents of SHIELD episode, airing February 4th. In a clip shown to press today, we saw Mike watching a park from afar where his son is playing. He holds up a piece of paper in front of him on which he's written, "Can I please see my son?" The answer he's given, inside his digital eye, is "Not yet." The camera pans down and we see Mike's new, metallic leg and a close up shows the words Cybertek and Dethlok stamped into the metal in small letters.In another scene, Bill Paxton’s John Garrett joins Coulson to interrogate a captured Ian Quinn. Quinn looks battered and bloody - he's been beaten up by someone else, causing Garrett to comment that someone already managed to play the role of "bad cop" he'd been planning to take. That doesn't stop Garrett from demanding, "Tell us about Cybertek and the Deathlok program." Game over man, game over!We also learned more about Lady Sif’s arrival. She’ll be visiting Midgard because she’s hunting the Thor villain Lorelei, played by Elena Satine (who previously played Mera on Smallville). We were shown a scene from her episode in which Sif confronts Lorelei onboard the SHIELD "bus." Sif demands Lorelei return with her, as Lorelei taunts Sif, saying she loves a man "Who considers you more of a pet." Soon things get physical, and the two Asgardian goddesses are fighting each other. Sif once more proves she's a badass, as she flips Lorelei over, slamming her onto the ground and covering her mouth with a guard, similar to the one Loki was made to wear at the end of The Avengers.Last, but not least, we were also shown Stan Lee's upcoming guest cameo on Marvel's Agents of SHIELD. I won't give away the specifics except to say it's in the middle of Coulson and Simmons on an undercover mission.