Demon Dean was speculated to be one of the major villains on the tenth season of "Supernatural".

Actor Jensen Ackles provided some spoilers for what Demon Dean will be like in the series next season. In an interview with E! Online, Jensen Ackles spilled little information about the personality of the new Demon Dean. According to Ackles, Demon Dean will be a despicable being who does not care about anyone of anything and he loves being that way.

"It was a tough season for old Dean last year. He was going through a lot. I wanted to take all of that away, all the weight of the world, all the heavy, the guilt, all of that stuff, remove all of that, because Demon Dean does not care. That's kind of where I went with this character. He is Dean without a care in the world... It's not comedic, it's almost scarier. He cares so little for everything and everybody, and he loves it."

Being a villain next season emerged from the previous spoilers about Demon Dean being a menace. His brother, Sam, will chase after him and will try hard to find a cure for the current state of his brother. Moreover, the puzzling role of Mark of Cain makes Demon Dean more dangerous.

The storyline about Demon Dean will be resolved in a span of at least three episodes. However, show runner Jeremy Carver said that fans will be entertained even after Dean goes back to normal. Just when everyone thought that the case is resolved, twists and turns will happen unexpectedly, which is one of the main characteristics of the series.

"I think just when it seems like things might be starting to settle down, we will introduce a few new doosies to the world," Carver told Entertainment Weekly.

"Supernatural" season 10 will be back on air on October 7, 8PM on CW.