More horrible villains are expected to come to Beacon Hills in the sixth season of MTV's "Teen Wolf."

In an interview with TVGuide, series creator Jeff Davis revealed that Scott McCall (Tyler Posey) and his pack will face a lot of challenges in the upcoming season, and some of them have something to do with the Nazi zombie that suddenly appeared in the season 5 finale.

"He will be lurking about season 6 and causing a lot of trouble. It may actually allow us to explore another episode in WWII," Davis revealed. "We had a lot of fun doing the fox and the wolf with the Japanese internment camp episode so we may revisit that."

However, the zombie will not be the biggest threat to the wolf pack in season 6, since another threat will emerge as the story unfolds next season. The new threat will come from an entirely different mythology that will bring tons of challenges in shooting because of technical difficulty.

Also, "Teen Wolf" season 6 will also show how the discord in season 5 brought the pack closer together.

"It was just another big test and conflict for us to put them through. One of the things that we're really trying to do with season 6 is show the strength of friendships and test that again," the series creator revealed. "We're taking it back to the story of Scott and Stiles's (Dylan O'Brien) friendship and how meaningful that is."

Meanwhile, the fate of Theo Raeken (Cody Christian) is still uncertain in season 6. According to Davis, Christian was a delight to work with on the show, which is why it will be hard to say goodbye to the actor and his character in the series. So fans are advised to wait for more announcements regarding Theo's possible return to the series.

"Teen Wolf" season 6 is expected to return to MTV later this year.