ABC has confirmed that Marvel's Agents of S.H.I.E.L.D. executive producer Stan Lee will guest star in an upcoming episode, which is tentatively scheduled to air on February 4, although that may change. While details about who he is playing have not been released, he revealed it is a, "big role." The Marvel legend has become well known for his string of what he calls "a million cameos," in movies such as Spider-Man, Fantastic Four, to the more recent Marvel Phase One movies including Iron Man and Marvel's The Avengers. However, it seems like he has a much more significant role in the ABC series. His other TV credits include cameos on The Big Bang Theory, and he will next executive producing, as well as lend his voice to, the animated movie Stan Lee's Mighty 7, which debuts February 1 at 8 PM on The Hub.

Take a look at a photo from the set with Stan Lee, alongside co-creator Maurissa Tancharoen and cast members Clark Gregg and Elizabeth Henstridge. Then read on for more details about the second half of Season 1.

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Aside from series star Clark Gregg, who plays Agent Coulson, Marvel's Agents of S.H.I.E.L.D. has previously brought actors from Marvel's cinematic universe into the series, such as Samuel L. Jackson (Nick Fury) and Cobie Smulders (Agent Maria Hill). Clark Gregg recently commented on the latest addition to the Marvel universe, Paul Rudd, who was confirmed to play Ant-Man in December. While we still have a few years left until Ant-Man hits the big screen, Clark Gregg revealed he would love to see Paul Rudd appear on his show.

"What I love most about the movies from Iron Man to The Avengers is the sense of humor, and to have someone in the world who's going to really slam the not taking himself too seriously component out of the park is perfect. I hope [Rudd] does a lot of films with them and he comes onto our show. I love that idea. I love that idea. I think he's amazing and, for me, what's great about Marvel is the kind of outside the box casting that they've done, starting with Robert [Downey Jr.] who now seems so perfect, but I think was a little bit of a tough sell at the first moment. People who you don't associate initially with superhero movies is what works so well for Ant-Man, who's so smart and has an intellect."

In a separate interview, Clark Gregg spoke about whether or not fans will get a definitive answer about what happened to Agent Coulson between his death in Marvel's The Avengers and his resurrection on the series.

"As a fanboy, I thought, 'How are they going to do this? They've been keeping this for 10 episodes.' We know that there's something bogus about the magical place concept. He can't even say Tahiti without turning into a robot. Is he a robot? How did they bring him back? Is he some kind of Life Model Decoy, as all the Marvel fans think? Is he the Vision? There's all these theories. How do you do this for real and really pay it off? At the same time, you don't want them to go, 'Well, I guess that's the finale of the show. There's really no need to continue after this. The bullet was in the chamber, now it's completely blown.' When I read the script, I was blown away because it's completely satisfying to me as a fanboy, and, as probably the biggest fanboy in Phil Coulson in the Marvel Universe, because it's not a tease, it's: here's what happened! At the same time, what they've crafted not only opens up enough questions that are at the existential core of Phil Coulson and his relationship with S.H.I.E.L.D., but really set the direction for the back end of the season and the future of the series. I was very, very impressed with what they delivered here."

When we last saw Agent Coulson in "The Bridge" last month, he was being turned over to Centipede by Raina (Ruth Negga), under orders of a mysterious Clairvoyant. Here's what the actor had to say about where the series picks up with tonight's mid-season premiere, "The Magical Place".

"It's revealed at the end of Episode 110 that more than they even want to capture our stabilized super-solider Mike Peterson (J. August Richards), their master-villain the Clairvoyant knows about Coulson's resurrection - and seems to know more about Coulson's resurrection than Coulson knows - so Coulson ends up in the unenviable position of being captive in the hands of people who want and have the technology to extract the secrets of his resurrection. That is the same thing that he wants, but he wants that information without giving it to them."

When asked if fans would ever see any flashbacks to his time in that "magical place" Tahiti, the actor had this to say.

"I wouldn't call them flashbacks. That doesn't seem like a term that does them justice. We know that these people are ruthless. We've already seen them kill many people. The one thing this Clairvoyant person wants is the one thing they can't see. The only thing the Clairvoyant doesn't know is this: there's a blank spot. They have technology that can reveal those memories, and it's not a pleasant experience for Coulson. Yet, if he can endure it, there is a possibility that he can get the truth, although to even go down that road endangers all the secrets of S.H.I.E.L.D."

When we last saw Agent Coulson in "The Bridge" last month, he was being turned over to Centipede by Raina (Ruth Negga), under orders of a mysterious Clairvoyant. Here's what the actor had to say about where the series picks up with tonight's mid-season premiere, "The Magical Place".

"It's revealed at the end of Episode 110 that more than they even want to capture our stabilized super-solider Mike Peterson (J. August Richards), their master-villain the Clairvoyant knows about Coulson's resurrection - and seems to know more about Coulson's resurrection than Coulson knows - so Coulson ends up in the unenviable position of being captive in the hands of people who want and have the technology to extract the secrets of his resurrection. That is the same thing that he wants, but he wants that information without giving it to them."