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Fans may find last season 3 of "The Flash" intense and full of dire episodes. However, showrunner Todd Helbing promises that it won't be the case in the upcoming season 4. Helbing reveals that once Barry Allen returns from the Speed Force, he will be different, in a positive way.

"Last year, once we showed Iris die in the future, to keep up that doom and gloom, it becomes a burden, and not just on us writing-wise, on the show and it just sort of had this pall over the season that I think we didn’t expect to be so heavy," he says to ComicBook.com.

"I'm not trying to say anything bad about season 3. I love season 3, and I love Savitar, and I love the story we told, but I think that's about as dark as I ever want to go with the show," Helbing continues. "So yeah, I think that was a conscious effort of ours to really go back to everybody enjoyed being on this team and with each other, and make 'The Flash' have fun again. I'm really excited about the scripts so far; they're really, really funny."

Star Grant Gustin adds in a separate interview, "It's almost like a fresh start for me as an actor this year. It gives me an opportunity to let go of all the weight that we've kind of built up for the first three seasons and have held onto."

"There's even some lines that reflect that for Barry-that he's been able to cope and move on in a way that he never was able to in the past," he dishes, before adding, "So it gives me an opportunity to let go and have more of that fun that we had initially in season one."

"The Flash" returns for season 4 on Tuesday, October 10 at 8 P.M on The CW.