The much-awaited Arrow season 4 premieres on 7 October and fans will finally get to see Team Arrow back in action as they face a deadly new villain. Oliver Queen will return as the Green Arrow and it will be interesting to see how his new, revamped and "less intense" superhero identity affects the mood of the show.

In an interview with MTV News, Arrow executive producer Marc Guggenheim and actor Stephen Amell revealed that the happy, honeymoon phase for Oliver and Felicity will be short-lived thanks to the new villain Damien Darhk who Guggenheim refers to as the "heart of darkness."

"With Deathstroke and with Ra's and Malcom [Merlyn], those were always guys who were the heroes of their own story," Guggenheim explained. "They were guys who were doing the wrong thing for what they thought were the right reasons. This year, we wanted to do something different. We wanted a villain who was truly villainous; who didn't care about morality in the way that the previous three big bads did. Damian is pure evil. He's the heart of darkness."

"If something is going to lure Oliver and Felicity out of their light, happy place, it's going to be the heart of darkness," Amell joked. "No, it's interesting. It's different this year too, where we've always taken the time to introduce our quote-unquote big bad, or the reveal of who the villain is. It's not so much the case this year."

What can fans expect from the Arrow season 4 premiere episode

The premiere episode picks up months after Oliver and Felicity drove off into the sunset in the season 3 finale. Black Canary and Thea come to Oliver to tell him the Arrow is needed back in Star City. Here's how the synopsis for Arrow season 4, episode 1 titled Green Arrow, reads:

Oliver (Stephen Amell) and Felicity's (Emily Bett Rickards) blissful getaway is cut short when Thea (Willa Holland) and Laurel (Katie Cassidy) pay them a visit and tell Oliver they need his help back in Star City. The city has been attacked by "Ghosts," assassins led by a dangerous man named Damien Darhk (guest star Neal McDonough). However, when Oliver returns, Diggle (David Ramsey) makes it very clear that he doesn't want Oliver on the team.

In an earlier interview, Amell teased that the premiere episode will have "something new" that's never been done or shown before on the show. This secret 'something' will apparently set the tone for the remainder of the season. Wonder what that will be.

Where to watch Arrow season 4 premiere online

Arrow season 4 premieres this Wednesday at 8pm ET/PT on The CW. You can click here to watch the episode online. The premiere episode can also be viewed online via live stream by clicking here.

Official synopsis for Arrow season 4, episode 2 titled The Candidate

When an old family friend, Jessica Danforth (guest star Jeri Ryan), tells Oliver (Stephen Amell) and Thea (Willa Holland) that she is going to run for mayor, both Queens are concerned considering the last three mayors have been murdered. Despite their protests, Jessica makes her announcement so the Green Arrow and Speedy vow to protect her.

Meanwhile, Thea begins to exhibit effects from the Lazarus Pit. In addition, Felicity (Emily Bett Rickards) is faced with a tough business decision and looks to one of her employees, Curtis Holt (guest star Echo Kellum), for help.