The actor will portray the genius physicist who runs the S.T.A.R. Labs facility. Plus, the series will include The Pied Piper.
Producer Greg Berlanti reveals how the spin-off series will have more sci-fi aspects than Arrow and how The Flash will feature S.T.A.R. Labs.
The actress will play the fast-talking daughter of Detective West and the possible future wife of Barry Allen in The CW's Arrow spin-off.
Supernatural: Tribes will be introduced as an episode of Supernatural this season, while The Flash will get a traditional standalone pilot.
Francisco "Cisco" Ramon will fight crime alongside Barry Allen in The CW pilot. The character may become a series regular if he is well-received.
The Ghosbusters star revealed that he would be meeting with the creators of the series next week on the Cross The Streams radio show.
The actor reveals how excited he is about Barry Allen's future. Find out how both shows will remain as separate as possible.
The series was planning on using an Arrow episode as a back door pilot. Grant Gustin's Flash will still appear in two upcoming Arrow episodes.