After debuting in two Season 2 episodes of Arrow, Grant Gustin's Barry Allen, a.k.a. The Flash, is getting his own spin-off series on The CW this fall. Grant Gustin and co-stars Rick Cosnett (Detective Eddie Thrawne) and Danielle Panabaker (S.T.A.R. Labs scientist Caitlin Snow) teased new details in a recent interview, including the changes that were made to The Flash costume, a love triangle between Barry and Eddie, and some potential crossovers with Arrow.

While it isn't known if there will be a noticeable difference between the Flash suit that Grant Gustin wears in the pilot and the suit in subsequent episodes, the actor revealed that slight modifications were made to make it more comfortable.

"You don't want to hear an actor complain about being a superhero, but yeah, it's not the most comfortable thing I've ever worn. But it's maybe the coolest thing I've ever worn, which kind of makes up for it. And we've since made some slight modifications to make it more comfortable."

Rick Cosnett added that his character, Eddie Thrawne, was recently transfered from Keystone City to Central City, while teasing a love triangle that develops between Eddie and Barry.

"He's a star detective and he's new. He just got transferred from Keystone City to Central City. Everyone loves him in the precinct because he swoops in and does a really good job. He's a very able man. He's really nice. He is very good at his job. He doesn't have any weird addictions or anything...and I think much to the dismay of Barry because they are friends, and there may or may not be a girl who gets in the way. There's a lot of tension."

Grant Gustin also confirmed which character comes between Eddie and Barry.

""Barry's in love with Iris (Candice Patton), so that will be another fun dynamic."

Danielle Panabaker talked about how confident the cast is in their showrunners, Greg Berlanti, Andrew Kreisberg and Geoff Johns.

"I feel like we're in good hands. Greg Berlanti, Andrew Kreisberg and Geoff Johns are such comic book nerds. I asked them, 'What do you think? Where did you Caitlin go to college?' And all of a sudden, ten minutes went by and they're like, 'She went to this college and this was her most important professor.' They have the history behind every character, so that's great."

Grant Gustin added that he trusts everyone around him on the show.

"I feel pretty good, but that's not because I'm super confident or anything. It's just because I trust everyone around me and I'm just having fun, so I'm not really worrying about it."

The actor also spoke about the possibility of crossovers between Arrow and The Flash.

"There will be crossovers. I don't know who will be coming and going from which show, but yes, as far as I know, it's been established."

When asked if there may be a reunion between Barry and Arrow's Felicity (Emily Bett Rickards), the actor wouldn't say for sure if that is happening.

"I would expect that's not done, but I don't know."

The CW hasn't announced exactly when The Flash will debut yet, so stay tuned for that announcement.