Jared Padalecki, Jensen Ackles Jared Padalecki, Jensen Ackles

Expect a healthy dose of Demon Dean when Supernatural returns.

The CW drama, which comes back Tuesday, Oct. 7 at 9/8c, will pick up with Dean Winchester (Jensen Ackles) having become the thing he's always hated most: a demon. "We will stay with Demon Dean for more than one episode," series executive producer Jeremy Carver said at the Television Critics Association fall previews on Friday. "You'll see a different type of Demon Dean than you might expect."

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Carver also said to expect the usual werewolves alongside the usual demons, angels and ghosts. As far as new characters, he added, "While Sam (Jared Padalecki) is on the hunt for his brother, there is a rather mysterious character who is also on the hunt who causes complications for the brothers."

As for Castiel (Misha Collins), whose use of the stolen grace backfired on him last season, "when we meet [Castiel], he is very much an angel, but a very much weakened angel," Carver said. "With his grace fading, he is very much in danger of dying if he doesn't deal with it."

As the series approaches its landmark 10th season and 200 episodes, fans are naturally concerned about how much longer they can expect their favorite demon-hunting show to go on. Carver isn't worried. "I hate to go all military now but, there's no quit in anybody... There's so much story left to tell," he said. "We're very excited to keep telling this story."

Padalecki is gung-ho as well, as long as the quality of the show stays high. "I truly do deeply care about the show and about Sam Winchester... I spent nine years of my life with him, and so I don't want him to be broken down and beaten down into something that I end up not respecting," he said. "I think we know the show enough, our characters enough, that if there's an end coming, I think we'll all see it and we don't have to push it to the 'I Love L.A.' levels. I've got some kids now and a wife. I love my personal life very, very much and when it's time to hang up the Sam Winchester hat, I'll welcome that chapter."

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Ackles added: "I think we're all on the same page. We still get excited by it and I think that that hasn't tarnished in 10 years. And I remember getting the last script of Season 9, and I got all giddy about it. I was excited to see what happens in Season 10. I think as long as there's that fulfillment, that enjoyment, that excitement, then yeah, we will keep going, as long as people are hanging in with us and are still entertained. We love these stories."

Whenever the end does come, Carver isn't 100 percent certain what shape it will take, even though he's thought about it. "I know that [creator] Eric Kripke always had an ending in mind [that] he hasn't yet shared with me," he said. "And I have an image ... but I always want to keep room for happy accidents as well. The show is continuing beyond any of our wildest dreams so I don't think we want to limit ourselves. Just because I might have the perfect image in my head doesn't mean that one of these guys can't come up with something."

Padalecki jumped in, "You realized you just invited us to write the ending... It's go time!"

Supernatural kicks off its 10th season on Tuesday, Oct. 7 at 9/8c on The CW. The night before, a special Supernatural documentary looking back on the previous nine seasons will air at 9/8c.

What do you want to happen in Season 10? When should Supernatural end? Watch last season's epic finale here.

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