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Sam Heughan, Caitriona Balfe and Ron Moore dish on Brianna, Roger and more.

Things are going to be looking a lot different on Outlander when the series returns for Season 3.

The Starz time travel series did a major overhaul on its storyline in the Season 2 finale, "Dragonfly in Amber," and stars Sam Heughan, Caitriona Balfe and showrunner Ron Moore offered up some teases of what those changes mean for the future.

From the introduction of major new characters Brianna Randall and Roger MacKenzie to a time jump that will recenter the series\' core story, Outlander is making a major shift as it moves forward two decades. It\'s a big change, and something that the people involved in the series are very excited about.

"I’m kind of more excited about now going on from here," said Heughan. "It’s just such an interesting place we’re at now."

Read on for Balfe, Heughan and Moore\'s insights on some of the show\'s biggest changes and what they\'ll mean looking ahead.

Sophie Skelton and Richard Rankin only appeared in the Season 2 finale of Outlander, but stars Heughan and Balfe are already making them feel like their family -- well, sort of.

"Me and Caitriona, we like to bully them," Heughan said of working with the new actors. "We’ve been known to hide all the craft service from them and demand that they don’t have any trailers. We have a lot of fun with them. I don’t have any scenes with them, but it’s been great. It’s been really exciting. We’ve spent some time with them. I’ve spent some time with Sophie, who plays Brianna, and hung out with Rick. It’s nice to have new blood. It was a really odd time because we were losing a lot of our regular cast, which was very sad, but also really exciting to have this new blood -- young, good looking things coming in."

Heughan joked that he and Balfe are already preparing for Skelton and Rankin to take over as the show\'s 20-something leads as Jamie and Claire get aged up to their 40s. "It’s fine, we’re getting put out to pasture and we can just get fat. I’ve already started," he quipped. "Surely [Jamie\'s] got a bit of a beer belly. I’m going to take it upon myself to age ungracefully. I think Fat Jamie is what everyone wants to see."

Claire and Jamie\'s daughter Brianna and her unlikely Scottish ally Roger Wakefield were the two most important characters to cast on Outlander after Claire and Jamie. For showrunner Ron Moore, the process for casting the new duo was very similar to finding his Season 1 leads, admitting it was a matter of "you know it when you see it."

"You always know when it\'s not right, and then when it is right it\'s usually kind of obvious to everyone," he said. So what was he looking for? "Probably the way they listened to the other people in the scene," Moore explained. "It\'s an underrated quality, listening and reacting, as opposed to waiting for your line and going through the paces of, \'Bulls--t, bulls--t, my line,\' that kind of thing. John Wayne used to say that he wasn\'t an actor, he was 

actor -- and that\'s very true. It\'s about reacting to people and feeling like you\'re actually in the scene with them, as opposed to just doing your lines."

Balfe put a lot of effort into trying to figure out who Claire would become in the 20 year jump forward in the time. With the exception of potential future flashbacks to when Claire returned to Frank through the stones, Outlander largely reset its timeline two decades forward when the series catches up with Claire in 1968. To prepare for that drastic change for her character, Balfe turned to film.

"I\'ve started to watch films of certain actors who have had really long careers and watch them at this age and then watch them at that age," Balfe said of preparing for the shift. "I\'ve started to watch like, \'Well, what is different about them in the span of 20 years?\' What changes? Is it just about your physical -- it can\'t be. So it\'s interesting. I\'m sort of in the process of doing all of that now, and I\'m still trying to figure it all out.

"Someone like Charlotte Rampling is someone I\'ve been looking at," she continued. "The reason I came to her anyway was I watched 45 Years, and she\'s still such a beautiful, sexy but elegant woman. It\'s just interesting because when you look at her from years ago she has all the same qualities, but there are things that are different, so it\'s figuring out what those are or what they might be for me."

Outlander: Diana Gabaldon, Ronald D. Moore Season 2 Interview - Comic-Con 2015

"I think experience and time change your makeup," explained Balfe of the change in Claire. "For me the interesting things are, what does a lifetime\'s experience do to you? How do you change? I think for Claire there\'s a certain resignation that creeps into her character that I don\'t think was there before -- because I feel like I\'ve always felt Claire is a very hopeful person, and so resilient, but she\'s resilient because of that hope and because, yes, bad things will happen, but she knows they can get through it and go forward. But I think there is only so much that a person can endure, and I think that there are certain things that, if they happen to you, they will knock your confidence and extinguish a little bit of that hope.

"You know, it\'s a beautiful thing to watch her become a woman who is a professional and who achieves a lot, but there is a price to having gone through everything that she\'s gone through, and I think that\'s interesting to watch, how that subtly just changes her."

Claire\'s revelation at the end of Season 2 that Jamie didn\'t die at Culloden means that, if he also is still alive in the past, they\'ve been apart for decades. That period of time apart from Claire is something Heughan hopes the show explores.

"When Jamie takes Claire to the Stones, that’s it. He thinks he’s going off to die, and she thinks that’s it. I think that that for me is a really interesting place," he said. "I think we’ll probably see that in Season 3 if we follow that through. I’ve only got my own ideas of what I would do with that. I think he is bereft of everything: he’s killed his uncle, he’s lost the battle, he thinks they’re going to die. He’s a dead man walking. It will be so fun."

Heughan added, "I think it would be really interesting to see Jamie and Claire apart, how they both develop their characters and what they become in 20 years, and then when they see each other again."

Outlander: Caitriona Balfe, Sam Heughan Season 2 Interview - Comic-Con 2015

With the time jump two decades, the separation of Claire and Jamie and the return of Geillis Duncan, a lot was happening in Outlander\'s Season 2 finale. But let\'s not forget that it was also time to say goodbye to Dougal MacKenzie -- plus learn that his lineage lives on in Roger Wakefield.

"They’re just fighting to survive and to try to stop this thing from happening. Jamie’s hand is forced at that point," Heughan said of the decision to kill Dougal. "It’s a huge moment because there’s so much history between them. It’s very sad for us as actors to lose such a great character, but it also actually seals Jamie’s fate. It turns him into an outlaw among his fellow men, it turns him into a traitor, and forces them to flee. But there’s no escape for Jamie."

Starz renewed Outlander for Seasons 3 and 4. Check out our review of the Season 2 finale.

Terri Schwartz is Entertainment Editor at IGN. Talk to her on Twitter at @Terri_Schwartz.