A few new spoilers for the upcoming third season of Grimm were released Tuesday, including a tease about the reemergence of a feud.

Grimm creators James Kouf and David Greenwalt talked to TVLine in a Tuesday report about what viewers can expect from the upcoming season. They said the third season will feature "alligators in the sewer" and a reemergence of the Bauerschwein-Blutbad feud. The feud between the pig-like Bauerschwein and the wolf-like Blutbad was addressed in the season 1 episode The Three Bad Wolves.

The series creators also discussed a new development that has been a long time coming. Sergeant Wu (Reggie Lee) will finally face the Wesen species head on. There will be an episode in which Wu will be the central character, facing off against a disturbing villain.

The series creators said that the villain is "something so creepy that the last thing that creepy was the fly episode. This is right on par with that." The "fly episode" that the creators are referring to was Mr. Sandman from season 2, in which a fly-like Wesen fed on human tears.

Grimm Season 3 Spoilers: Preview of Upcoming Wedding & Cast Talks First Two Episodes

In other Grimm news, a new guest star has been cast for the upcoming season. Actor Alexis Denisof (Buffy the Vampire Slayer, Angel) will have a recurring role on Grimm this fall as "Viktor, Albert Wilhelm George Beckendorf," the first cousin of Eric Renard (James Frain), according to a recent report by Deadline.

Season 3 of Grimm premieres on Friday, Oct. 25 at 9 p.m. on NBC.