Theodora Day started his career in the adult film industry around 2021- 2022, initially known as Mia Lewis, and then later took the stage name Theodora Day. After his first major roles, he quickly became recognizable to the audience, and worked with several famous studios, including Mile High, Elegant Angel, Evil Angel, Nubiles, Brazzers and others. He has been in over 140 films and websites, where he appears in various roles: from traditional heterosexual scenes to lesbian and anal scenes and events and photographs. In 2023 and 2024 he received Nubilis' Fantasy Of The Month 'and' Flavor Of The Month '.