Mikaela "Mikey" Madison Rosberg (born March 25, 1999) is an American actress. She began her career acting in short films and received recognition for her role as a sullen teenager in the FX comedy series Better Things (2016–2022). Madison then played Manson family member Susan Atkins in Quentin Tarantino's Once Upon a Time in Hollywood (2019) and Amber Freeman in Scream (2022). For her breakthrough role as the titular stripper... see more