Over two decades since the release of Scooby-Doo (2002), the live-action adaptation of the beloved Hanna-Barbera cartoon continues to cast a long, eerie shadow. Directed by Raja Gosnell and written by James Gunn, the film brought Mystery Inc. to life with a star-studded cast: Freddie Prinze Jr. as Fred, Sarah Michelle Gellar as Daphne, Matthew Lillard as Shaggy, Linda Cardellini as Velma, and Neil Fanning as the voice of Scooby-Doo. With a mix of comedy, adventure, and horror, the movie grossed $275 million worldwide on an $84 million budget, becoming a nostalgic cult classic despite mixed reviews. Remarkably, the main cast members are still deeply entrenched in the horror genre today, proving their Scooby-Doo days were just the beginning of their terrifying journey.

The Scooby-Doo film, released on June 14, 2002, follows Mystery Inc. after a two-year breakup due to clashing egos. The gang—Fred, Daphne, Velma, Shaggy, and Scooby—are summoned to Spooky Island to investigate paranormal incidents at a spring break hotspot. The plot, filled with demonic possession and a shocking twist involving Scooby’s nephew Scrappy-Doo (voiced by Scott Innes, with Rowan Atkinson as his human disguise), blends campy humor with horror elements. While critics noted its juvenile humor and subpar CGI, the pitch-perfect casting, especially Matthew Lillard’s iconic Shaggy, has kept the film alive in fans’ hearts.

Freddie Prinze Jr. (Fred Jones)

Before Scooby-Doo, Prinze Jr. was a teen heartthrob known for horror hits like I Know What You Did Last Summer (1997) and its 1998 sequel, alongside his then-fiancée Sarah Michelle Gellar. His portrayal of the narcissistic Fred leaned into the character’s arrogance, adding a comedic edge. Since Scooby-Doo, Prinze Jr. has stayed connected to horror, though less directly. He voiced characters in Star Wars Rebels, including a role in The Rise of Skywalker (2019), which dabbled in dark, eerie themes. In 2023, he expressed mixed feelings about Scooby-Doo due to studio changes but acknowledged its impact on young fans. His horror roots remain evident, with recent projects like Christmas with You (2022) showing his versatility, yet his I Know What You Did Last Summer legacy keeps him a horror icon.

Sarah Michelle Gellar (Daphne Blake)

Gellar, already a horror legend as Buffy in Buffy the Vampire Slayer (1997–2003), brought a fierce, independent edge to Daphne, moving her beyond the “damsel in distress” trope. Post-Scooby-Doo, she starred in The Grudge (2004), a horror blockbuster grossing over $187 million, and its 2006 sequel. Her horror credentials continued with roles in Ringer (2011) and Do Revenge (2022), and she’s set for a career resurgence with projects announced at San Diego Comic-Con 2022. Gellar’s ability to blend horror with emotional depth keeps her a genre staple, and her real-life romance with Prinze Jr., sparked on I Know What You Did Last Summer, adds a heartwarming layer to their Scooby-Doo chemistry.

Matthew Lillard (Shaggy Rogers)

Lillard’s Shaggy is widely praised as the film’s standout, capturing the character’s goofy charm perfectly. Before Scooby-Doo, he starred in horror classics like Scream (1996) and Thirteen Ghosts (2001). Since 2002, Lillard has become synonymous with Shaggy, voicing him in over 40 projects, including Scooby-Doo! Mystery Incorporated (2010–2013) and Trick or Treat Scooby-Doo! (2022). His horror journey deepened with his role as William Afton in Five Nights at Freddy’s (2023), a box-office hit that marked his “Renaissance era” in horror, with a sequel planned. Lillard’s passion for genre work and fan engagement solidifies his status as a horror and Scooby-Doo legend.

Linda Cardellini (Velma Dinkley)

Cardellini’s brainy Velma was a fan favorite, with her dedication to the role evident in her audition, where she dressed in character. Before Scooby-Doo, she appeared in The Scooby-Doo Show (1978) and Legally Blonde (2001). Post-2002, she embraced horror with roles in The Curse of La Llorona (2019) and Capone (2020), alongside dramatic turns in Green Book (2018) and Dead to Me (2019–2022), earning Emmy nominations. Cardellini also returned to the Scooby-Doo universe, voicing characters in Scooby-Doo! Mystery Incorporated (2011–2013). Her horror versatility keeps her a genre force.

Neil Fanning (Scooby-Doo)

Fanning, who voiced Scooby, had limited acting roles before, appearing in the TV movie Chameleon (1998). After Scooby-Doo and its 2004 sequel, he lent his voice to Scooby in video games and worked as a stuntperson in projects like The Great Raid (2005). While his horror involvement is less extensive, his contribution to Scooby-Doo’s spooky charm remains iconic.

The Scooby-Doo cast’s ongoing horror involvement reflects their versatility and the film’s lasting influence. From Lillard’s chilling Five Nights at Freddy’s role to Gellar’s The Grudge legacy, Cardellini’s La Llorona, and Prinze Jr.’s horror-adjacent projects, they’ve kept the genre alive. The film’s campy yet spooky vibe, paired with James Gunn’s original R-rated vision (toned down after test screenings), set a tone that resonates in their careers. As fans revisit Scooby-Doo for its nostalgia, the cast’s horror legacy ensures its place in pop culture, proving that meddling kids can haunt us forever.