Announced nearly a year ago, the March 29 episode brings Sam Winchester (Jared Padalecki), Dean Winchester (Jensen Ackles) and Castiel (Misha Collins) from their live-action world to the animated universe of Mystery Inc. Specifically, they're transported into the 1970 episode of Scooby-Doo, Where Are You! “A Night of Fright Is No Delight." However, as we see from the image of a bloody body, the expected high jinks turn dark pretty quickly.
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This being Supernatural, the Winchester brothers are of course aware they're in an episode of Scooby-Doo, which will no doubt lead to them living out some childhood fantasies, such as Dean attempting to romance Daphne. It will also allow them to participate in some cartoon tropes ... such as Dean consuming a comically oversized sandwich alongside Shaggy and Scooby.
The Scooby Gang was introduced in 1969 in Hanna-Barbera's Scooby-Doo, Where Are You!, the classic Saturday-morning cartoon that has spawned scores of spinoffs, and just as many imitators, in the decades since — not to mention two live-action theatrical films and two live-action TV movies. Scooby-Doo and the other Hanna-Barbera properties are owned by Warner Bros., the parent company of Supernatural producer Warner Bros. Television.
The longest-running show now on The CW, Supernatural is in its 13th season, and shows little sign of slowing down. "Scoobynatural" debuts Wednesday, March 29, at 8 p.m. ET/PT on The CW.