Movies with Jeff 'Swampy' Marsh

Jeff "Swampy" Marsh is an accomplished film and voice actor who has brought a distinctive blend of humor, versatility, and undeniable charm to a wide array of roles over the course of his celebrated career. While he may be best known for his acclaimed work as a writer, producer, and co-creator of the beloved Disney animated series Phineas and Ferb, Marsh has consistently demonstrated his remarkable talents as a performer, seamlessly transitioning between live-action and voice acting with effortless ease. Marsh's notable performances are defined by his uncanny ability to inhabit a diverse array of characters, from the hilariously eccentric yet endearing Dr. Heinz Doofenshmirtz in the Phineas and Ferb franchise to the gruff, no-nonsense Agent Monogram in the O.W.C.A. Files animated special. His dynamic vocal range and impeccable comedic timing have allowed him to elevate even the most seemingly ordinary roles, infusing them with a distinct personality and a keen sense of humor that has delighted audiences across multiple generations. Beyond his acclaimed work in the world of animation, Marsh has also made memorable appearances in live-action films such as the 2025 thriller Spiked, showcasing his versatility and dramatic range. With a career that spans over two decades, Swampy Marsh has firmly established himself as a multifaceted and respected figure in the entertainment industry, renowned for his ability to bring an unparalleled level of depth and nuance to every character he portrays.