Fredi Casso (프레디 카소), born Kim Si-hwan on April 13, 1989, is a South Korean producer recognized for his versatile contributions to hip-hop and contemporary music. He began his career in 2015 under NMWM Entertainment, releasing the collaborative album Build Up with Teth. Over the years, he has become known for both his solo and collaborative works, including the instrumental album Was Inst. (2017) and the studio album Pale Blue Dot (2020). Fredi Casso has actively collaborated with artists such as Dsel and QM, resulting in projects like Second II None (2022), Empire State Motel (2022), Room Service (2023), and Nazca Records (2024). He also teamed up with Ambid Jack for Death Therapy (2024), further showcasing his range as a producer. A former member of Vismajor Company (2019–2023), he is now signed under Nazca Records, where he continues to expand his artistry. In 2025, he released a new single "PILOT".