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DC Studios is keeping its biggest Clayface transformation secret — and Tom Rhys Harries says the final result is “fucking sick.”
The upcoming Clayface movie is already shaping up to be one of the most unusual horror releases of 2026. While trailers and promotional material have shown Matt Hagen’s disturbing physical transformation, the filmmakers are deliberately keeping his complete Clayface form hidden until audiences see the movie.
Tom Rhys Harries, who plays Matt Hagen in the film, has now teased what fans can expect from the final transformation.
And his reaction is certainly intriguing.
Tom Rhys Harries Teases Clayface’s Final Form
In a recent interview with Empire, Tom Rhys Harries was asked about the movie’s monstrous final version of Clayface.
His response was brief:
“It’s fucking sick!”
The actor did not reveal what the finished creature looks like.
That is important because the filmmakers have intentionally avoided showing the complete transformation in trailers and other official marketing.
The result is that audiences still do not know exactly what the fully transformed Clayface will look like when the movie arrives in theaters.
The Full Clayface Transformation Is Being Kept Secret
The decision to hide Clayface’s final form is deliberate.
Director James Watkins, who previously directed Speak No Evil and Eden Lake, has explained that he wants to preserve the mystery surrounding the creature.
Rather than showing the biggest monster reveal in a trailer, the filmmakers want audiences to experience it for themselves when they watch the movie.
Watkins has compared the approach to the way filmmakers once avoided showing too much of a major creature before audiences reached the theater.
That means fans should not expect the complete Clayface monster to appear in upcoming promotional material.
What Have the Trailers Shown?
Although the final form remains hidden, the marketing has already given audiences plenty of clues about Matt Hagen’s transformation.
The trailers and promotional footage show Hagen’s physical condition deteriorating as his treatment begins to affect his body.
His face starts losing its normal appearance, with his flesh appearing to melt and deform.
The movie is clearly leaning heavily into body horror, rather than treating Clayface simply as a conventional comic-book supervillain.
However, these glimpses do not reveal the complete final creature.
Who Is Matt Hagen?
Tom Rhys Harries plays Matt Hagen, the man who eventually becomes Clayface.
According to the official synopsis, Hagen rises from a Gotham street kid to a successful Hollywood actor.
His career is violently disrupted when the actions of a local crime boss leave him horribly disfigured.
After losing his career and being abandoned by his team, Hagen turns to an experimental treatment that appears to restore his former appearance.
But the treatment comes with devastating consequences.
Instead of simply curing Hagen, it begins to affect his perception of reality and sends him down an increasingly destructive path.
His transformation into Clayface becomes part of a story about identity, humanity, revenge and scientific ambition.
Clayface Is a Horror Movie
Although Clayface is based on a character from the Batman universe, DC Studios is presenting the movie as a horror thriller.
The official movie description focuses on Matt Hagen’s horrifying transformation and his descent from Hollywood star to revenge-driven monster.
The movie is also rated R for strong bloody violence, gore, language, some nudity and brief drug use.
That rating gives the filmmakers considerably more room to explore the disturbing physical side of Hagen’s transformation.
James Watkins Is Directing Clayface
James Watkins is directing the movie.
Watkins is known for horror films including Eden Lake and Speak No Evil, making him a particularly notable choice for a project that is heavily focused on body horror.
The screenplay comes from Mike Flanagan and Hossein Amini, with Flanagan also credited with the story.
The combination of Watkins and Flanagan has made the horror elements one of the major talking points surrounding the movie.
Who Stars in Clayface?
The movie stars:
Tom Rhys Harries as Matt Hagen / Clayface
Naomi Ackie
David Dencik
Max Minghella
Eddie Marsan
Nancy Carroll
Joshua James
Tom Rhys Harries is at the center of the story as Matt Hagen.
When Does Clayface Release?
Tom Rhys Harries is at the center of the story as Matt Hagen.
Clayface is scheduled to arrive in theaters internationally beginning October 21, 2026, followed by its North American theatrical release on October 23, 2026.
The movie will be released exclusively in theaters.
That puts its theatrical run directly into the Halloween season, making the timing particularly appropriate for a body-horror movie.
What Will the Final Clayface Form Look Like?
That is the biggest question the movie is currently refusing to answer.
The available official marketing has shown Matt Hagen’s transformation progressing, but the complete final form has deliberately been kept out of promotional material.
Director James Watkins has specifically defended the decision to preserve the reveal.
Tom Rhys Harries’ recent comments also confirm that audiences should expect a significant final transformation, but he has not described its appearance in detail.
So, for now, we don’t actually know exactly what the final Clayface form looks like.
And that’s probably the point.
Don’t Trust Unofficial “Final Form” Images
With the movie approaching release, fans may encounter supposed leaks, concept art, AI-generated images or fan-made designs claiming to reveal Clayface’s final form.
Those should not automatically be treated as genuine.
Unless an image or description comes directly from the filmmakers, Warner Bros., DC Studios or another reliable source, there is no reason to consider it an official reveal.
The filmmakers have deliberately kept the full transformation secret.
Why the Mystery Matters
Superhero movie marketing frequently reveals major characters, creatures and action sequences before a film reaches theaters.
Clayface is taking the opposite approach.
By keeping the final monster hidden, the filmmakers are creating curiosity around one of the movie’s most important horror elements.
Audiences already know that Matt Hagen will undergo a grotesque transformation.
What they don’t know is just how far that transformation goes.
That mystery could make the theatrical reveal considerably more impactful than seeing the finished creature repeatedly in trailers.
Clayface: What We Know So Far
| Detail | Confirmed Information |
| Movie | Clayface |
| Genre | Horror thriller |
| Main character | Matt Hagen / Clayface |
| Actor | Tom Rhys Harries |
| Director | James Watkins |
| Screenplay | Mike Flanagan and Hossein Amini |
| Story | Mike Flanagan |
| Rating | R |
| North American release | October 23, 2026 |
| International release | Beginning October 21, 2026 |
| Final Clayface form shown in marketing? | No |
| Complete appearance officially revealed? | No |
The Bottom Line
Clayface’s full final form remains one of the movie’s biggest secrets.
Tom Rhys Harries has teased that the finished transformation is extremely impressive, but neither he nor the filmmakers have revealed exactly what audiences will see.
James Watkins is deliberately keeping the creature’s biggest reveal out of the marketing, giving moviegoers a reason to discover the transformation for themselves.
With Clayface arriving in theaters in October, horror fans won’t have to wait much longer.
For now, the best look at the monster may be the one we haven’t seen yet.
Clayface hits theaters internationally beginning October 21, 2026, and in North America on October 23, 2026.
