TMDb/Tulsa King Celebrity Flula Borg joins Sylvester Stallone in Tulsa King Season 4. Discover the tech billionaire's role in Dwight Manfredi's criminal empire. New episodes filming now. March 14, 2026 AceShowbiz - Tulsa King is expanding its cast for the upcoming fourth season with the addition of Flula Borg, known for his role on The Rookie. Filming for season 4 began in November 2025, continuing the story of Dwight Manfredi, played by Sylvester Stallone, a former Mafia capo managing illicit businesses throughout Tulsa, Oklahoma.