With the first half of Marvel's Agents of S.H.I.E.L.D.'s Season 1 in the books, many fans are wondering if the show plans on using any Marvel comic book characters in 2014. While the show has featured Marvel characters such as Samuel L. Jackson's Nick Fury and Saffron Burrows' Victoria Hand, the show hasn't taken the same approach as CW's Arrow, which had brought on several DC Comics characters.

When asked if there are plans for more familiar characters popping up on the hit ABC series, Marvel's TV head Jeph Loeb had this to say.

"Stay tuned. There is a plan."

When the show was first announced, it was clear that Marvel's Agents of S.H.I.E.L.D. wouldn't be filled with superheroes from Marvel's cinematic universe, although there have been several references to the events in Joss Whedon's blockbuster Marvel's The Avengers, along with their Thor: The Dark World crossover episode, "The Well".

We reported earlier this month that the show will bring in two new S.H.I.E.L.D. agents in Episode 14, both of whom have a history with Agent Coulson (Clark Gregg). However, it isn't known if these are characters pulled from the comic books, or if they were created specifically for the series. There has also been a rumor that Taskmaster will appear on the show, but that has not been confirmed. In the comic books, Taskmaster runs the Solomon Institute for the Criminally Insane, which serves as a training ground for criminals and villains.

Since the mid-season finale ratings marked a season low, it's possible that Marvel and ABC may try to revamp the show by bringing in more familiar characters, to try and ensure a Season 2 renewal. The series returns Tuesday, January 7 at 8 PM ET with "The Magical Place".