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Leonard and Sheldon in "The Big Bang Theory"

Production for "The Big Bang Theory" season 10 is officially underway and with it comes a slew of new details on what's to come in the new season.

It has been revealed that "Pretty Little Liars" alum Brandon Jones was tapped to play a guest star role in the new season of the season. From what cast member Mayim Bialik teased, the actor played a role of a superhero.

"Thanks for your 'flash'y guest spot," the actress captioned a photo of her with Jones. On Instagram, she shared another clue on the nature of the actor's "The Big Bang Theory" season 10 gig.

"He's sweet, he's southern and he feels comfortable in latex," Bialik teased of the guest star role, which now has many thinking that Jones will play the role of DC Comics superhero The Flash.

With the love of Sheldon (Jim Parsons) and the guys for the character, it is not a shock that the superhero once again finds his way into the episode.

Other cast members also took to social media to celebrate their reunion for "The Big Bang Theory" season 10 production. Melissa Rauch who plays soon to be mom Bernadette shared a Polaroid photo of the gang.

Earlier this month, Kunal Nayyar who plays Raj shared a photo of the script on Instagram as he marks the beginning of the season 10 filming.

"The Big Bang Theory" season 10 will start off with the night of Leonard (Johnny Galecki) and Penny's (Kaley Cuoco) redo wedding.

Fans will remember that Leonard's father and Sheldon's mom were thought to have spent the night together as they were not answering their phones on their way back to the hotel when their sons called them.

Penny suggested that they hooked up and that Sheldon and Leonard will become stepbrothers soon. It remains to be seen if this will be the case, but if it will be, "The Big Bang Theory" season 10 will be riot.

"The Big Bang Theory" season 10 premieres Monday, Sept. 19 at 8 p.m. ET on CBS.