Stacy Keibler will appear in the third episode of Chuck 's upcoming fourth season.
Stacy Keibler, the former WWE star will star as Greta, a recurring character played by a different actor each week. Keibler will follow Olivia Munn and Isaiah Mustafa in the role.
Keibler recently appearances in How I Met Your Mother season 5.
The CW's Entertainment president Dawn Ostroff has said that Supernatural could be longer than six seasons.
Creator Eric Kripke had intended it was later announced that the drama would return for a sixth season.
Series stars Jared Padalecki and Jensen Ackles are currently only contracted until the end of the Supernatural season 6.
Ostroff also revealed that the show would return to the storytelling format of the Supernatural seasons dvd, featuring standalone episodes and one-off villains.
Supernatural season 6 begins September 24 on The CW.
