Duncan Idaho is back from the dead in Dune: Part Three — Jason Momoa explains how

Right then, dust off your stillsuits — Dune: Part Three is on the horizon, and yes, we’re already talking about that infamous Duncan Idaho comeback. If you’ve read Frank Herbert’s books you know this twist, but for everyone else: yes, Jason Momoa really is returning. Corpses aren’t what they used to be, apparently.

I’m back, baby. I came for that one.

That’s from Momoa himself, in a clip posted by the official Dune account, visibly delighted to be resurrected among the spice and sandworms for Denis Villeneuve’s next epic chapter.

A Familiar Face, Not Quite the Same

So how are they pulling off this resurrection trick? Here’s the gist: Duncan Idaho isn’t exactly Duncan anymore. As Momoa explained to Empire, his character returns as someone called Hayt — basically, a genetically engineered clone (the technical Dune term is 'ghola', for the hardcore fans keeping score). This Hayt chap has some lingering memories from the Duncan that valiantly died protecting Paul Atreides back in the first film — but his entire identity is a genetic remix, not a copy-paste job.

According to Momoa, coming back as a memory-haunted doppelganger was ‘nerve-wracking’. He straight up admitted feeling odd about it: he’d signed up for Duncan, not a clone who’s part familiar, part total stranger. He did throw in, though, that the wild streak from the original Duncan is still encoded somewhere in Hayt’s DNA. In his words, he kept waiting for the moment to say, ‘This is my guy, man. I’m going to unleash hell on everyone!’ Nice to see some things don’t change, even in Dune-world genetics.

New Emperor, New Dynamic

But it’s not just Momoa doing something different; Timothée Chalamet is moving into his ‘Emperor Paul Atreides’ era — a transformation far removed from the wide-eyed messiah he played before. Momoa was practically gassing him up about it, saying that Paul as Emperor is ‘strong, silent and violent’ — not one for flowery speeches, apparently.

The relationship between Chalamet’s Emperor and Momoa’s Hayt is nothing like the old Paul-and-Duncan bromance. Momoa broke down how the two actors might goof off between takes, but once Villeneuve calls action, it’s full-on psychological combat. He was genuinely floored (not something you hear every day with Momoa) at how Chalamet held his ground with him on set, physically and mentally — describing Chalamet’s presence in those scenes as ‘like a nuke’.

Dune: Part Three opens in cinemas and IMAX on December 18, 2026.