Michael Sheen teases his return as Aziraphale in Good Omens season 2. The Amazon Prime and BBC show from Neil Gaiman was originally believed to be a six-episode miniseries when it released in 2019, adapting the 1990 novel of the same name by Gaiman and Discworld author Terry Pratchett. Good Omens was renewed for season 2 in June of this year, however, with no release date as yet announced.

Both the series and its source material are comedic reworkings of the Christian apocalypse, in which the angel Aziraphale (Sheen) and demon Crowley (David Tennant), having grown fond of life on Earth, conspire to prevent it from ending. Both their efforts and those of their superiors are problematized when the Antichrist, Adam (Sam Taylor Buck), is misplaced as a baby and raised in aggressively benign circumstances. Good Omens received positive reviews upon release and was praised by fans of the popular novel, though some religious groups to offense to the show's irreverence, resulting in a hilariously misguided petition for Netflix to cancel it.

Related: Good Omens: The Biggest Questions Season 2 Can Answer

Now, Sheen teases the return of Aziraphale in Good Omens season 2 with pictures of him dying his hair. Both he and Tennant are already confirmed to reprise their roles, but getting back into his character's distinctive white hair must mean filming is either fast-approaching or already underway. While the haloed emoji is an obvious reference, the caption "shades of grey" should have fans wondering if Sheen is offering a hint at the show's mystery story. Check out the photos below:

News of Good Omens season 2 came as such a surprise to fans because the first six episodes covered the entirety of the source novel, and the decision to continue the story was likely controversial for some. The book's second author, Pratchett, died before season 1 was produced, and Gaiman only agreed to make the series after receiving a posthumous letter from Pratchett urging him to do so. Those that might bristle at the notion of extending the narrative beyond his involvement can rest easy, however - Gaiman has said the next episodes are based on ideas for a sequel novel the two had cooked up together long ago.

For those more excited than nervous about the prospect of more Good Omens, the caption to Sheen's second photo will surely ignite some speculation on season 2's mystery plot. While it could just reference his character's hair, which is white, it could also allude to the series' depiction of morality as more of a sliding-scale than the duality of Heaven and Hell would suggest, which should continue to be a theme moving forward. Alternatively, Sheen could be hinting that Aziraphale (and likely Crowley) becomes more human as a result of his banishment to Earth, and that his white hair really does turn grey. Fans will have to wait for official promotional material to know for sure the direction Gaiman is going with Good Omens season 2, but hopefully the Welsh actor drops a few more hints during production.

Next: Good Omens: Unused Gaiman And Pratchett Story Ideas Season 2 Can Use

Source: Michael Sheen (see links)