The filmmaker's death came one week after he suffered a stroke.

Jon Schnepp, best known for his work on Adult Swim's Metalocalypse, died Thursday (July 19), one week after suffering a stroke. He was 51.

Schnepp served as the writer and key director of Metalocalypse, which aired for four seasons from 2006 through 2012.

The news of his passing was confirmed by Schnepp's fiancé, Holly Payne.

"It is with a broken heart the Schnepp family and I must announce the passing of our beloved Jon Schnepp, who died peacefully on July 19, 2018," Payne wrote on Twitter. "Jon ultimately succumbed to the effects of a massive stroke."

She added, "He had a blood clot removed from his left carotid artery, but the bleeding could not be stopped. Irreparable and catastrophic damage was caused to both hemispheres and all brain activity ceased. His sister Deborah and I had to make the difficult decision to take him off of life support. There was no possible way for him to recover."

The hardest thing I’ve ever had to write. Our statement regarding @JonSchnepp from myself & the Schnepp family. Our hearts are heavy. Please respect our privacy. We are still raising money for his costly medical expenses. Thank you for your support. https://t.co/2qg7a9LcJG pic.twitter.com/hBfW7l7A5M — Holly Payne @TDOSLWH (@hollykpayne) July 20, 2018

Schnepp suffered the stroke on July 12, according to a statement released by Payne and his family last week. A GoFundMe page was created for his medical bills. It has since raised more than $100,000 of its $150,000 goal.

"Jon is on life support at this time," Payne wrote. "While everyone is desperate for updates on his condition, we ask for your understanding on giving us the privacy we need over the next few days as we deal with the difficult decisions concerning Jon’s care."

Not long after news of Schnepp's death broke, his good friend Patton Oswalt took to Twitter to pay tribute. "Jon Schnepp, a truly creative and good-hearted man, has passed away," the comedian tweeted, accompanied by a link to Payne's GoFundMe page. "If you can, please help Holly with the massive, life-crushing medical bills? Let's help someone who's been devastated."

Schnepp is survived by Payne, his sister, Deborah, his mother, Miriam, and his father, David.

Jon Schnepp, a truly creative and good-hearted man, has passed away. If you can, please help Holly with the massive, life-crushing medical bills? Let's help someone who's been devastated. https://t.co/Ortz4wmGS2 — Patton Oswalt (@pattonoswalt) July 20, 2018

The post first appeared on The Hollywood Reporter.