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Beyond Roseanne, Quinn showcased his versatility in projects like the spin-off series Angel, where he portrayed the half-demon Allan Francis Doyle. His final film appearance was in the dark comedy RSVP (2002). Tragically, Glenn Quinn's life was cut short at just 32 when he was discovered deceased in his North Hollywood home from an accidental drug overdose on December 3, 2002. His loss remains deeply felt, but his legacy endures through his authentic performances that continue to touch fans.