Adam Wingard's You're Next and The Guest redefined what low-budget horror could do in the early 2010s. Then the MonsterVerse came calling. Now, with Onslaught, Wingard is back in the trailer park — and he brought a UFC champion with him.

The Setup: Super Soldiers, a Sniper, and a Seven-Year-Old

Celeste (Adria Arjona) is a PTSD-stricken Army sniper living in self-imposed isolation at a run-down trailer park in New Mexico. When her ex-husband drops off their daughter Daisy for an unexpected visit, three genetically engineered super soldiers escape a nearby covert military facility and begin killing indiscriminately. The biggest and most terrifying of them goes by one name: The Butcher.

It's a classic siege setup — Assault on Precinct 13 meets Predator — and Wingard (alongside longtime collaborator and screenwriter Simon Barrett) leans hard into it. The trailer park becomes a battlefield. Celeste's sniper instincts are her only advantage. And the scientists behind the experiment, Dr. Hans Kammler (Dan Stevens) and his wife Hanna (Rebecca Hall), are part of the threat in ways that deepen as the film unravels.

The Butcher Is Played by the Scariest Man Alive

Alex Pereira is the reigning UFC Light Heavyweight Champion. He is not an actor. He is a Brazilian kickboxing legend who has knocked out more opponents than most people have watched fights. He is also, as The Butcher in Onslaught, genuinely terrifying on screen.

Pereira entered talks for the role in October 2024 — his first-ever film role — and delivers the kind of physical menace that no amount of stunt choreography can fully fake. At 6'4" with a knockout power that's actually earned in competition, he makes The Butcher feel like a creature from a different food chain. The casting is a masterstroke: when you know Pereira's record, his silence on screen reads as something more unsettling than any scripted dialogue could achieve.

It's the kind of stunt casting that could have been gimmicky. In Onslaught, it works.

The Barrett Reunion

If Wingard is the engine, Simon Barrett is the transmission. The two have been making movies together for over 15 years: You're Next (2011), The Guest (2014), Blair Witch (2016), and now this. Their work together has a specific flavor — wry and mean in equal measure, with protagonists who turn out to be more capable than anyone expected, and antagonists who carry a cold ideological menace beneath the surface mayhem.

Onslaught is the third chapter in what Wingard has described as a spiritual trilogy with You're Next and The Guest — and he's confirmed the film shares continuity with The Guest. Whether you catch every thread or not, the tonal DNA is unmistakable.

A Return That Means Something

After two Godzilla vs. Kong movies with budgets in the $150 million range, Wingard was candid about what the MonsterVerse cost him creatively. "I felt like I needed to do a story that solidified what my style was as a filmmaker, and this is it," he told SlashFilm. "When I was in the franchise IP world, all the decision making was more or less based on nostalgia...it's not necessarily a personal story."

Onslaught is a personal story. It's a mess in some places — the critical consensus landed at 54% on Rotten Tomatoes, with Variety calling it "fun but scattered" and IndieWire noting it "peaks too soon." CinemaScore gave it a C, which tells you something about how mainstream audiences received its midnight-movie sensibility.

But a C CinemaScore for a film like this isn't a failure — it's a badge. You're Next was a polarizer. The Guest was a slow burn that built its cult over years. Onslaught isn't trying to be Spider-Man. It's trying to be the film that reminds everyone why this director matters to horror.

The Ensemble That Fills the Frame

Beyond Arjona and Pereira, the cast is stacked with faces genre fans will recognize: Dan Stevens brings his signature unnerving charisma to Dr. Kammler, Rebecca Hall adds weight to a role that could have been thankless, and Michael Biehn — who made his name in The Terminator and Aliens — turns up as a trailer park veteran named Baylor. Reginald VelJohnson (yes, Die Hard's Al Powell), Drew Starkey, Eric Wareheim, and Jacob Scipio round out a supporting ensemble that's half cult-classic alumni, half pure genre muscle.

Should You See It?

If you came up loving You're Next and The Guest, you owe it to yourself to see what Wingard and Barrett built next. The rough edges are real, but so is the ambition — and the gore is practical, old-school, and unapologetically excessive. Onslaught is in theaters now.

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