Comic book creator Neil Gaiman is returning to The Simpsons this fall for 2017's Treehouse of Horror.

The author confirmed his inclusion in the forthcoming episode via his personal Twitter account, where he specifically states that he won't be playing himself in a return appearance. Rather, the acclaimed author will be voicing an established character from the show.

I am on the Simpsons Treehouse of Horror this year. I do not play myself this time. Instead I voice a character who has not spoken before.

— Neil Gaiman (@neilhimself) September 21, 2017

As for who he'll be voicing, Gaiman offered that the character has never spoken before. Perhaps the obvious answer would be Maggie Simpson, but the youngest Simpson has previously been voiced by a number of guest stars: James Earl Jones, Jodie Foster, Elizabeth Taylor and Danny Devito. It's also worth noting that she has a tendency to speak during the "Treehouse of Horror" specials.

Gaiman's appearance on the series is part of the show's 29th season, which is due to premiere on October 1, 2017. "Treehouse of Horror XXVIII" is set to premiere on October 22.

"The Treehouse of Horror," which started in the show's second season, is The Simpsons' annual Halloween special. The name and concept was inspired by EC Comics horror tales.

Gaiman's previously portrayed himself in the 2011 episode "The Book Job" from the show's 23rd season.