Lucas Till will play the character that Richard Dean Anderson made a household name.
He'll play the husband of former NCIS star Cote de Pablo on the potential series.
Filming on the epic DC feature film begins in April.
Amanda Tapping will also direct the new vampire hunter series.
She'll play a future roboticist in an upcoming episode of The CW's new sci-fi series.
She'll play an antagonist in next week's new episode.
The actor played the Satedan Tyre on Stargate Atlantis.
The original series made Richard Dean Anderson a household name.
The independent genre feature is currently filming.
The Stargate veterans will both play villains from the DC Comics pantheon.
Dennis Haysbert and SG-1 guest star Ian Tracey have also been cast in the potential series.
SGU's Brian J. Smith co-stars on the sci-fi drama from the Wachowskis and the creator of Babylon 5.
The SG-1 co-star discusses her directing career and the Devlin/Emmerich reboot in a new interview.
The Stargate veteran plays a scientist in this Friday's episode.
The 18-episode season of the hit Canadian drama will air on CTV.