The news comes after the band performed their classic song “Master of Puppets” in a TikTok video, while wearing black-sleeved Hellfire Club shirts in homage to Stranger Things character Eddie Munson.
In the latest season of the Netflix show, Eddie – who is the misfit president of a Dungeons & Dragons group called The Hellfire Club – heroically plays the rock anthem in an effort to distract demons from attacking his friends.
The 1986 song recently reached No 1 on the iTunes rock charts after being featured on the popular fantasy series.
In the TikTok video shared in July, the band played the song in the same t-shirt Eddie wears in the season finale.
“Eddie, this is for you!” the group captioned their video.
The TikTok clip features the band playing in split-screen with Eddie from Stranger Things, rendering the video into a sort of “duet” between the heavy metal band and the fan-favourite character.
“We told you it was coming, and friends don’t lie,” the band wrote on Instagram in a new post, while announcing the new collaborative merch.
“The Hawkins High Hellfire Club dropped off some official @strangerthingstv x Metallica gear in the Metallica Store and @probitymerch UK Shop. Order now to complete your Eddie Munson Halloween costume!”
On the band’s website, the merch description is full of Stranger Things references: “Been fighting Demogorgons, slaying evil, closing portals to the upside down? Oh, no? Just hanging at a Metallica show? That’s cool, you can still dress the part!”
The range features a t-shirt, a raglan t-shirt and a hoodie so that fans can dress up like the popular character.
Tye Trujillo – the 17-year-old son of Robert Trujillo (Metallica’s bass player since 2003) – played the actual lead to “Master of Puppets” for the show, with Quinn miming along to the riff.