The Flash was a big hit for DCTV and WB in its freshman season, earning strong ratings - but more importantly, shattering the limitations of DC comic book storytelling that had tethered sister series Arrow up to that point, and establishing a larger DC TV mythos. With far-out concepts like Legends of Tomorrow now set to join in the DCTV universe (correction: "multiverese"), and even Arrow getting into magic and mysticism, it looks like Flash season 2 will be free to run with any metahuman, time-bending, multi-dimensional ideas the showrunners can think of.

We talked Flash producer Andrew Kriesberg during Comic-Con 2015 about what the storyline for The Flash season 2 will entail - but before we get to that, there's something bigger to focus on - something that has become a tradition for these CW DC TV series: new season = new costumes.

Check out the new threads that Barry Allen (Grant Gustin) will be wearing in The Flash season 2:

The first thing that hardcore fans will zero in on is that white insignia on Barry's chest. In season 1, there was a mystery about a future version of Barry/The Flash who is a full-fledged hero - one who sports a white lightning insignia, as opposed to the red one Barry started out with. During the season 1 finale, it was this white insignia Flash who Barry witnessed battling Reverse-Flash the night his mother died; that same future Flash was the one who signaled to Barry NOT to intervene in his mother's fate - to accept the past as it was.

For season 2, fans are going to want to know more about how Barry evolves into the fully heroic version of himself - and what that time loop between his past and future self is all about.

For his part, Andrew Kreisberg had the following to say during SDCC2015 regarding Barry becoming more of a heroic figure in season 2:

Last year was sort of really about getting the band together, in a way, and Barry, his first initial steps into being The Flash. This year it’s really like, “OK. Great. We’re doing it now.” What does that mean?

I think one of the biggest things that we’re sort of tackling this year which is very different from any of the other shows we’ve done is [public perception] about The Flash. He’s becoming a public figure. The notion that [these people] live in a universe where people have superpowers, and there are evil people with superpowers, and you could be walking down the street and somebody could melt the building in front of you is not outlandish anymore. By the same token, they all know that there’s a savior out there who has powers to fight them back. So watching Barry deal with the fact that he’s becoming a little bit famous and he’s not just the mysterious red streak is something that gets dealt with a lot in newer episodes.

Anyone who has ever seen a super hero movie or TV show that had more than one installment knows that eventually, the public's perception of the hero becomes a (almost cliched) issue that must be addressed. There was one film (name escapes me) that put it thusly: "You either die a hero, or you live long enough to see yourself become the villain."

Speaking of actual villains, Kreisberg also teased that Central City will be getting even more bad guys in season 2 (surprise):

There’s definitely going to be more Rogues. We don’t sit down and say how many characters do we dump into this? It’s like: What can we do for the characters that we have? And when we bring somebody on, it’s not just to bring a character on. It’s to: how is that character coming in going to affect and change and help our characters grow?

As we said in our list of things WE want to see in Flash season 2: More of Hartley Rathaway, The Pied Piper (Andy Mientus) is a must! As for other Rouges: Mirror Master is about the only big one we have left to see (from the main Rogues) - after that, they can feel free to pretty much pull from the (oft silly) bench of Flash villains - or even pluck from elsewhere around the DCTVU, given how interconnected things have gotten.

MORE: Flash's New Season 2 Lighting Powers

The Flash season 2 begins airing on The CW in Fall 2015, along with Arrow season 4. Supergirl will debut on CBS in November 2015. DC’s Legends of Tomorrow will air on The CW during the 2015-16 season. Titans is expected to debut on TNT during the first half of 2016.

Source: The CW