
Fans of the 1985 classic The Goonies know Sloth as the lovable, heroic member of the Fratelli family, but behind the scenes, portraying the character was far from easy. John Matuszak, the actor behind Sloth, endured intense prosthetic makeup that made communication nearly impossible.
Actress Martha Plimpton, who played Stef in the film, recently shared her memories on Lovett or Leave It. She recalled how Matuszak’s heavy prosthetics and mask made him “inaudible,” adding that “the poor man was sweating” while performing. Despite these challenges, Plimpton described Matuszak as a “lovely guy,” emphasizing his dedication to bringing Sloth to life.
Cult Status and Lasting Legacy
Earlier this year, members of the original cast, including Plimpton, Ke Huy Quan, and Kerri Green, reunited to reflect on the film’s 40th anniversary. In February 2025, a sequel was officially announced, with Steven Spielberg and Chris Columbus set to produce. While fans are excited about the continuation, the cast and director for the new installment remain unannounced.

Despite enthusiasm, not all cast members are fully onboard. Josh Brolin, who portrayed Brandon Walsh, expressed caution about revisiting the franchise. He shared his concern that a sequel could potentially “taint” the cherished memory of the original movie, highlighting the delicate balance between nostalgia and new storytelling.
Behind the Scenes of Sloth
Portraying Sloth required more than acting talent—it demanded patience and endurance. Heavy prosthetics, hot studio lights, and complex movements made filming grueling, yet Matuszak’s performance left an indelible mark on audiences. His dedication contributed to the character’s warmth, humor, and iconic status that fans celebrate today.

From Sloth’s heroic deeds to Matuszak’s on-set challenges, The Goonies remains a film where adventure and heart come together, proving why generations still adore this timeless story.