Wallis Day

Wallis Day is a British actress and model. Born in London, she took up acting at five, joining Stagecoach Theatre Arts, and later studied at the Sylvia Young Theatre School and Arts Educational Schools. At 13 she signed with Models 1 and spent three years as the agency's youngest model, working for brands like Garnier, Superdry, and Nike before pausing modeling at 16 to focus on acting. Her first film role was Lucy in Between Two Worlds (2016), and her first television part was Holly Cunningham on Hollyoaks from 2012 to 2013. Day went on to play Angie in The Royals, Olalla Jekyll/Hyde in Jekyll and Hyde, Nyssa-Vex in Krypton, and Agent Shin in Infinite (2021). In 2021 she took over the role of Kate Kane in Batwoman and also played Circe Sionis; she later joined Red Sonja (2025) as Annisia.