Fans are still on the edge of their seats as they await the season 4 finale, but star Stephen Amell is already looking towards to what’s in store for Arrow Season 5.

In season 4, Oliver Queen and his squad faces a formidable nemesis on the form of Damien Darhk (Neal McDonough). In an interview with TV Line, Stephen Amell reveals that the season 4 finale will have a scene that will be “really unlike anything we’ve done on the show.” Also, Oliver will have to enter a different “state of mind” in order to stop Darhk from getting hold of Rubicon to execute his nuclear apocalypse.

The Arrow TV series has introduced viewers to a solid set of baddies, including Darhk, Slade Wilson and Malcolm Merlyn. But Amell teases that the main villain in Arrow Season 5 “is something that you can really only do once you’re in the fifth, sixth or seventh season of a TV show.” He tells Variety that his nemesis won’t have any superpowers.

While Amell is careful not spill any more details about the new addition to the Arrow cast, it is rumored that the new villain is a man with the codename “James.” According to Cinema Blend, this big baddie is described as a “charming and charismatic” contemporary of Oliver’s who is dedicated to fulfilling his own mission for revenge.

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It is also said that James is related to Oliver’s past, thus there is a possibility that he will be introduced in one of Oliver’s flashbacks. Arrow writer Wendy Mericle also hints that one of Oliver’s flashbacks might show him in Russia, teasing a possibility that this might be where he meets his new enemy.

“I don’t want to tip too much, but it’s a very good possibility that we’ll finally find out how Oliver got that Bratva tattoo and how he learned to speak Russian,” Mericle said about the Russia flashback in Arrow Season 5.

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Basically, James is going be like what Hunter Zolomon was for Barry Allen. At first he appears as Barry’s friend and mentor, but the next time viewers see him he reveals himself as Zoom.

Meanwhile, Stephen Amell appears as Casey Jones in Teenage Mutant Ninja Turtles: Out of the Shadows, in theatres June 9.