A look at the character of Claire Bennet, played by Hayden Panettiere.

A look at the character of Peter Petrelli, played by Milo Ventimiglia.

A look at the character of Hiro Nakamura, played by Masi Oka.

A look at the artistic influences on the show and how the paintings are created.

A look at the character of Niki Sanders, played by Ali Larter, and a focus on some of the work of the prosthetics department.

A look at the character of Matt Parkman, played by Greg Grunberg.

A look at the character of Mr. Bennet, played by Jack Coleman.

A special catch-up episode looking at the impact Heroes (2006) has made in the UK since its initial airing and featuring interview footage from previous episodes of "Unmasked".

A look at the character of Sylar, played by Zachary Quinto.

A look at the character of Mohinder Suresh, played by Sendhil Ramamurthy, and analysis of the extent to which the science of the show reflects scientific fact.

A look at the character of Claude, played by Christopher Eccleston, as well as some of the casting decisions on the show.

A look at the writing on the show and the extent to which it has been influenced by comic books.

A look at the filming of the fight scene between Matt and Jessica.

A look at the locations and sets used on the show.

A look at the Company and how its activities have personally affected the Bennet family.

A look at Mohinder and Sylar's journey together and the revelation of Linderman's identity.

A look at the character of Isaac Mendez, played by Santiago Cabrera.

A look at how the cast and crew created their dystopian vision of the future.

A look at director John Badham's work on two episodes of the show.

A look at the completion of the first season and speculation on the future of the show.

Cast members and celebrity fans look back over the first season of Heroes (2006).