Mariah Rose Faith

Mariah Rose Faith Casillas gained public attention through her involvement with the production group Team StarKid. She appeared in their production of “The Guy Who Didn’t Like Musicals”. Following this, she achieved a significant career milestone by taking on the role of Regina George in the first national tour of “Mean Girls”. This role further established her presence in musical theater. In addition to her stage work, Mariah Rose Faith has also cultivated a digital presence, maintaining a YouTube channel where she creates her own content. She has studied Film Direction in Los Angeles, which complements her acting and singing career by providing her with skills in content creation and production.

Her acting credits extend to various productions with Team StarKid, including “Nerdy Prudes Must Die” (2023) where she played Stephanie Lauter and Caitlyn, and “Nightmare Time” (2020-2022), a TV Mini Series where she portrayed multiple characters such as Melissa, Stephanie Lauter, and Webby across seven episodes. She also contributed to “Pulp Musicals” (2021-2024) as the voice of Rose Stratford. Her involvement in these projects showcases her adaptability across different performance formats, including live theatre, filmed productions, and voice work. Mariah Rose Faith’s career demonstrates a consistent engagement with musical theater and digital platforms, highlighting her skills as both a performer and a content creator.

Mariah Rose Faith’s work also includes contributions to the music department, such as being an uncredited demo vocalist for an episode of “The Boys” in 2024. As a performer on soundtracks, she has lent her voice to numerous songs in her projects. For “Cinderella’s Castle” (2025), she performed on tracks including “Last Forever” and “Facade.” In “Nerdy Prudes Must Die” (2023), she was featured on songs like “High School Is Killing Me” and “Bury the Bully.” Her contributions to the soundtracks of “Nightmare Time” (2020-2022) and “The Guy Who Didn’t Like Musicals” (2018), including tracks such as “Nightmare Time 2 Theme” and “The Guy Who Didn’t Like Musicals,” underscore her vocal capabilities and her sustained involvement in musical productions.