
William Belleau (born April 15, 1982) is a Secwépemc Canadian actor known for his roles in films such as Killers in the Flower Moon (2023) and Eddington (2025), as well as the drama television series Frontier.
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In May of 2020, a standoff between a small-town sheriff and mayor sparks a powder keg as neighbor is pitted against neighbor in Eddington, New Mexico.

Made in Eddington gives a behind the scenes look at the making of Ari Aster's modern political nightmare.

When oil is discovered in 1920s Oklahoma under Osage Nation land, the Osage people are murdered one by one—until the FBI steps in to unravel the mystery.

A sudden rise in drug overdoses leads to an overcrowded hospital, where a rookie cop sits guard over a career criminal. They share the room with Robert, who learns he is dying. The two quickly bond and Robert's fate lends moral clarity to the actions the young cop must take.

Frustrated by scrolling dating apps only to end up on lame, tedious dates, Noa takes a chance by giving her number to the awkwardly charming Steve after a produce-section meet-cute at the grocery store.

A woman is released from prison after serving a sentence for a violent crime and re-enters a society that refuses to forgive her past.

The dead are coming back to life outside the isolated Mi'kmaq reserve of Red Crow, except for its Indigenous inhabitants who are strangely immune to the zombie plague.

A young woman newly returned to her hometown becomes the subject of harassment by a man named Blackway, an ex-cop turned violent crime lord who operates with impunity in this small community on the edge of the wilderness. Forsaken by the local townspeople—and advised by the Sheriff to leave town—Lillian decides instead to take a stand against her sociopathic stalker, and enlists the help of ex-logger Lester and his laconic young sidekick.

Four close friends have entered a radio contest to determine who can stay at the most spooky haunted location overnight. The group of 4 take a sweet candy truck to their location to earn more points in the contest. The haunted location they've chosen is a First Nations Residential School with a violent history. A demonic nun is conjured up from her final resting place after one of the four is brutally murdered, a trickster from across the galaxy arrives and more death ensues.

A cop comes across what he suspects to be a shoplifter caught in the act, but the confrontation doesn't go nearly as expected.
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