Supernatural Stars Reveal New Details About Their Scooby-Doo Crossover

Scooby Doo, where are you? Coming to the upcoming thirteenth season of the CW's Supernatural, in an animated crossover special that will team brothers Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) with the talking Hanna-Barbera dog.

The idea of an animated episode was kicked around in the writer's room as far back as season four, with co-show runner Andrew Dabb revealing it wasn't until Jeremy Adams (the episode's co-writer) made a Scooby Doo pitch that things started to click. With Supernatural and Scoob both being Warner Bros. properties, there would be no rights issues barricading a crossover — all that was left was for an excited creative team to produce the partially animated episode, which will make its way to The CW sometime in early 2018.

"Andrew [Dabb] knew some guys over at Warner Bros. Animation and they floated this idea. We took it to Warner Bros. and asked, 'What do you think?' and everybody got really excited about it. They guys have already recorded their parts and, I think, the Scooby Doo people have already recorded their parts. It's one of our bigger swings," executive producer Robert Singer told Hidden Remote. "I would say three-quarters of that episode is animation. I've seen the tests of Sam and Dean working with Scooby, it's pretty fantastic. We're really excited about it. I'm pretty confident people are going to like it. It's a long process. We started working on this last January and we won't get the final animation until this coming January. We've been talking it for years and we've finally able to pull it off."

"When we did the voice over, you could feel the energy inside the recording booth," Ackles told the Mary Sue, with (spoiler warning) Misha Collins, whose angel Castiel will be back in action as of the team up episode, adding that lending his voice to a Scooby Doo 'toon was a "pinch me moment."

"It'll be very Scooby-Doo-esque. Just a little slightly darker version of Scooby Doo, but I will say that when we went in and did the recording, it was Jared [Padalecki], myself, and Misha," Ackles said of the episode during San Diego Comic Con. "We recorded, we put cameras and there were GoPros all over. All of that will be on special features, but we were like vibrating we were so excited about it. We were so thrilled, and the whole process of doing the dialogue, we were having a scene. It's ridiculously funny."

Supernatural returns to The CW with its season 13 premiere on Thursday, October 12th at 8/7c.

"Season 12 of this fantasy drama picks up right where it left off, with Sam (Jared Padalecki) kidnapped by British Men of Letters member Toni Bevell (Elizabeth Blackmore); and Dean (Jensen Ackles) in shock at the sight of his mother, Mary (Samantha Smith), who's been long dead. Castiel (Misha Collins) is forced to partner up with Crowley (Mark Sheppard) to search for the vessel-jumping Lucifer, most notably played by guest star Rick Springfield. As Lucifer begins to possess more powerful and influential people to get what he wants, the hunters are forced to face the death of one of their own. While trying to stop Lucifer, the Winchester brothers are wrongly accused and arrested for his crime - leading Mary and Castiel to turn to an unlikely source to find them. Other notable guest stars include Rick Worthy and Alicia Witt."