Amanda Joy Michalka is an American actress, voice actress, singer-songwriter, and musician. She is best known as one half of the musical duo Aly & AJ, alongside her sister Aly Michalka. She has appeared in films such as The Lovely Bones (2008), Secretariat (2010), Super 8 (2011), Grace Unplugged (2013), Weepah Way for Now (2015), and Support the Girls (2018). Michalka also starred in the ABC sitcom The Goldbergs (2013–present) and its spin-off series Schooled (2019–2020). She voiced a lead role as Catra in the Netflix animated adventure series She-Ra and the Princesses of Power (2018–2020).