Karl Lentini began making films at age fourteen with his Dad's super-8 film camera. After graduating from Boston University's film school he moved to Los Angeles where he crewed on various film and TV productions. He also wrote songs and played guitar in venues throughout town. Karl worked in post-production for ten years as a film/digital projectionist and sound recordist at NT Audio in Santa Monica. His short film comedy "A Boy and his Sock", co-written by Matthew Porter, screened at the Dam Short Film Festival in Boulder City, Nevada and the Sydney Underground Film Festival in Sydney, Australia.

Karl wrote, produced, directed, co-edited, acted in, and scored his first feature film, "Cleaver's Destiny," which had a limited theatrical run in Los Angeles, CA. The film garnered a 2014 PRISM Award nomination and won Honorable Mention at the 2014 VOICE Awards.

Karl and fellow actor/writer Charles Gorgano have written over 30 country songs together, with the song "Whiskey and Wine" featured in the motion picture, "Honey Jar". In April 2018, Charles and Karl were honored with a Gold Remi Award at Worldfest-Houston International Film & Video Festival for their dramatic original screenplay, "My Cryin' Heart".