Amanda Joy Michalka, often credited asAJ, is an American actress, singer-songwriter, model, and musician, who is best known as one-half of the duoAly & AJ (formerly "78violet") with her older sister,Alyson. She is best known for providing the voice ofStevonnie, the fusion of thetitular character andConnie Maheswaran inCartoon Network'sSteven Universe. She later went on to voiceCatra in Dreamworks'She-Ra and The Princesses of Power underNetflix.