Ronald Perlman is an American actor known for his roles as Amoukar in Quest for Fire (1981), Salvatore in The Name of the Rose (1986), and Vincent in the television series Beauty and the Beast (1987–1990), for which he won a Golden Globe Award. He was also One in The City of Lost Children (1995), Johner in Alien Resurrection (1997), Hellboy in both Hellboy (2004) and its sequel Hellboy II: The Golden Army (2008), Clay Morrow in the television series Sons of Anarchy (2008–2013), Nino in Drive (2011) and Benedict Drask in Don’t Look Up (2021).

Perlman is also known as a collaborator of Hellboy director Guillermo del Toro, having roles in the del Toro films Cronos (1993), Blade II (2002), Pacific Rim (2013), Nightmare Alley (2021), and Pinocchio (2022). His voice-over work includes the narrator of the post-apocalyptic game series Fallout (1997–present), Clayface in the DC Animated Universe, Slade in Teen Titans (2003–2006), Mr. Lancer in Danny Phantom (2004–2007), Lord Hood in the video games Halo 2 (2004) and Halo 3 (2007), the Stabbington brothers in Tangled (2010), The Lich in Adventure Time (2011–2017) and its spinoff Adventure Time: Fionna and Cake (2023), Xibalba in The Book of Life (2014) and Optimus Primal in both the Transformers: Power of the Primes (2018) animated series, and the film Transformers: Rise of the Beasts (2023).