Robbie Amell Returning in Flash Season 3

Robbie Amell is slated to return reprise his role as Ronnie Raymond in Flash Season 3 when it returns on January 24 on CW .

Details are still unknown on if Ronnie Raymond is not actually dead or if its a flashback or another timeline, previously Ronnie Raymond (Firestorm) died while trying to destroy the singularity that opened up the portal to Earth 2 . Robbie Amell later returned in the show as the villain Deathstorm (Earth 2 doppelgänger of Ronnie Raymond), who died at the hands of Zoom.

Source : Entertainment Weekly