Back in March, we reported on early whispers placing Anya Taylor-Joy in The Lord of the Rings: The Hunt for Gollum. Warner Bros. has now made it official, confirming via a motion poster that Taylor-Joy will play Seren — described as “a Sindar Elf of the Woodland Realm, a trusted and lethal agent of King Thranduil.”
Welcome to the hunt, Anya Taylor-Joy. The Lord of the Rings: The Hunt for Gollum only in theaters 17 December 2027. pic.twitter.com/u7UoU9Jq3F
— Warner Bros. (@warnerbros) June 15, 2026
The film opens December 17, 2027, directed by Andy Serkis, who also returns as Gollum. The screenplay comes from Fran Walsh and Philippa Boyens alongside Phoebe Gittins and Arty Papageorgiou, with Peter Jackson, Walsh, Boyens, Zane Weiner, and Ken Kamins producing.
Seren is an original character — she does not appear in Tolkien’s writings — but the studio’s framing is careful. Thranduil is himself Sindar, one of the Grey Elves of Beleriand who remained in Middle-earth after the First Age, ruling the Woodland Realm of Mirkwood (Greenwood the Great) over a predominantly Silvan, Nandorin court. A Sindar elf in a position of close, personal trust with the king fits naturally within that hierarchy. The word “lethal” does considerable work in the description, suggesting something closer to intelligence operative than courtier.
The Appendices timeline makes the concept hold up. The Lord of the Rings Appendices detail Aragorn’s decade-long hunt for Gollum — roughly Third Age 3009 to 3017 — ending with Gollum’s capture and transfer to Thranduil’s custody in Mirkwood. An agent operating under Thranduil during those years could credibly be involved in tracking Gollum, coordinating with Aragorn (here played by Jamie Dornan as Strider), or managing the captivity that ultimately unravels when Sauron’s forces prompt Gollum’s escape. It’s a genuinely plausible narrative slot for an invented character.
That said, it’s hard not to notice a pattern forming. Tauriel in Peter Jackson’s The Hobbit trilogy was an original character — a Silvan Elf of Mirkwood invented entirely for the films, with no basis in Tolkien’s text. Hera in The Lord of the Rings: The War of the Rohirrim was similarly created for the screen. Now Seren joins that lineage. Each time, the justification is roughly the same: the source material doesn’t give us enough female characters, so the filmmakers invent them. We understand the creative impulse, and we’d never argue that Tolkien’s world is beyond a little expansion and interpretation. Fans simply long for the day when we get to see what Tolkien actually wrote and not an expansion of his world for “modern audiences”.
Taylor-Joy joins confirmed cast including Ian McKellen (Gandalf), Elijah Wood (Frodo), Lee Pace (Thranduil), Kate Winslet as original character Marigol, Jamie Dornan as Strider, and Leo Woodall as original character Halvard.
