Beccy Henderson is an actress and puppeteer best known for performing Deet in Netflix's Emmy Award winning series The Dark Crystal: Age of Resistance (2019) and the bespectacled geek 'Aisling' in Channel 4's breakout comedy Derry Girls (2018-2022). As well as Heather Pearce in Channel 5 and Acorn's Crime Drama Dalgliesh (2021).

As a member of the core puppetry team for The Dark Crystal: Age of Resistance, Beccy performs multiple other characters in the series including Naia, Maudra Seethi and Juni, as well as assisting with the Skeksis and countless other creatures. She also lent her voice to various characters including Deet's baby brother Bobb'n, Maudra Ethri, the Thrushpogs and Brea's squealing podling.