We first met Eddie Thawne in the first season of The Flash, though he'd ultimately sacrifice himself in the finale in order to wipe his distant descendant, Eobard Thawne/Reverse-Flash, from existence. Unfortunately, that proved to be pointless thanks to the Negative Speed Force preserving several of the villain's time remnants (hence why the evil speedster has been able to keep returning).
Regardless, the character's story will continue in The Flash season 8 as actor Rick Cosnett has confirmed he's set to return as Eddie in The CW series. "If you hadn't guessed...I'm in the new season of [The Flash]," he says in the Instagram post below, failing to give any specifics away about his role.
The Flash returns on November 16 with the five-part "Armageddon" event, though it's unclear whether Cosnett will be part of that or a later storyline in season 8. Many viewers were disappointed that they never got to see him suit up as Reverse-Flash, so it's possible that could be the plan for him if the team working on the series is looking to deliver some good old fashioned fan-service.
Cosnett returned as Rick in season 2 of The Flash and was later in season 3 as the Speed Force itself. Aside from that, he also showed up in Legends of Tomorrow with archival footage.
Check out the actor's post below: