Flash season 3
Grant Gustin as Barry Allen in The FlashThe CW/ Warner Bros TV

The cast and crew of The Flash season 3 attended the San Diego Comic-Con 2016 and shared some interesting details about the upcoming season, including the identity of new villains, time jump between season 2 and 3, the side effects of the Flashpoint timeline, and Barry Allen and Iris West's relationship.

IBTimes UK has compiled a list of the top five announcements made by the actors and producers at The Flash's SDCC panel.

Warning: Major spoiler ahead, proceed at your own risk

1. The Flash season 3 will pick up with Barry living in a new timeline for three months, where his parents – Nora and Henry Allen – are alive. Grant Gustin who plays Barry said, "At first Barry doesn't realize how much has changed ... when we find him, he's living in that blind bliss [that his parents are alive] and unaware of those other changes out there."

2. Barry is still a speedster in this new timeline, but he and Iris are not close, as his parents have not been killed by the Reverse Flash and he did not have to go and live with Joe West. However, Barry is confident that he and Iris will end up together, according to Gustin. He said, "He also knows that that conversation in the Season 2 finale still happened, as far as he remembers, his plan is 'I'm just gonna find her and it's gonna work out.' Good ol' Barry logic."

Executive producer Todd Helbing reassured fans, who seemingly want to see Barry and Iris in a relationship. He shared, "I think it's safe to say that in any timeline, Barry and Iris will ultimately find each other."

Flash season 3
Barry and Iris in The Flash season 3 trailerWarner Bros TV/ The CW

3. Wally West is now Kid Flash in the Flashpoint timeline. Keiynan Lonsdale, who plays Wally in the show said that "there's similar qualities" between Kid Flash and Barry's speedster. Lonsdale said, "He's Kid Flash, so I tried to play him with a young, lighthearted cockiness to him that can sometimes be his downfall, but he's just in a really good place mentally; he's never felt more sure of himself."

The actor also tweeted an array of images featuring all the Flash stars at SDCC 2016.

4. Season 3 will also introduce Tom Felton as Julian Dorn, a fellow CSI who seems to be suspicious of Barry. Felton replied to a fan query about his character being a threat to Barry. "I think any character I play you should see as a threat. The first two episodes, there's definitely some friction between Barry and Julian; he treads on the toes of Barry's expertise. There's some feathers ruffled fairly early on," the Harry Potter alum added.

5. Season 3 will introduce two villains, one of whom is Doctor Alchemy (voiced by actor Tobin Bell) who debut in the trailer released at SDCC. Todd Helbing said, "We're doing two big bads, one is a speedster that we'll reveal later, and the creepy guy in the mask that we saw is Doctor Alchemy."

Meanwhile, executive producer Aaron Helbing added, "He's a bad dude and he's going to be a formidable adversary to The Flash and everyone on the team."

The Flash season 3 is set to premiere on 4 October at 8pm EST on The CW Network.