The actress who plays Ms. Warner is Alexandra Billings. Before Never Have I Ever, she had a recurring role on The Conners. Plus, she was the second openly transgender woman to play a transgender character when she was in the 2005 TV movie Romy and Michele: In the Beginning.
Alexandra was also in the Amazon Prime series Transparent.
Outside of acting, Alexandra helped put together and narrate the audiobook Owning It, about those in the LGBTQ community owning their identities through stories.
She has also been married to her wife since 1995, and their adventures in traveling and spending time with friends and family are shared all over Alexandra's Instagram, much to her fans' delight.