During the Television Critics' Association summer press tour, "Heroes" creator Tim Kring spoke about the upcoming 13-episode revival series "Heroes: Reborn," revealing an important detail about a popular character, why some characters returned and others did not, and discussed whether we'll be getting more "Heroes" in the future.

As reported by Variety, while the upcoming miniseries mainly focuses on new characters -- like Zachary Levi's renegade Luke, Robby Kay's Tommy and Henry Zebrowski's Quentin -- many familiar faces from the original series make and appearance, including Jack Coleman's Noah Bennett, Masi Oka's Hiro and more. However, not all the original cast members return.

"Some of the actors did not have the availability because they were involved with other things so that's something that was just completely out of our control," Kring said. "I always saw it as a show that could re-populate itself. I wanted it to be easy for brand new viewers to watch for the first time. Falling in love with new characters is just as important as having the former cast in the new show."

Meanwhile, while being the major catalyst for change at the end of the original series and the person whose actions directly lead to current status quo of the miniseries, Hayden Panettiere's Claire Bennett will not appear -- as Kring confirmed her character's death occurring a year before the start of "Reborn." How exactly the unkillable girl died has yet to be revealed.

As to the future of the series, Kring said that they've "only spoken about doing [the miniseries]." However, he doesn't completely close the door and possibility of more.

"I've always felt that the brand was elastic enough and a broad enough premise," Kring admitted. "It's a show about ordinary people with extraordinary powers. It's an indeterminate [amount of] people around the world and then they have to save the world. I feel confident that we can find more story to tell with some returning characters and new ones."

"Heroes: Reborn" premieres September 24 on NBC.