Born in Plano, TX. Marsai began acting before she could talk. Noticing her natural desire for the spotlight, her parents took her to the Kim Dawson Agency in Dallas where they immediately signed her at the age of 5. She soon landed her first national commercial with the agency, appearing in The Choice Hotel ad "Voice of the People". As a student at Cathryn Sullivan Acting for Film, she attended a seminar that included several LA agents. In this seminar she secured representation with Melissa Berger at CESD.Marsai relocated to Los Angeles in late 2013 and in a little more than 100 days has accomplished more than most struggling actors can dream of including securing a major national commercial campaign with Meineke. That meteoric whirlwind also included being cast as the co-star in a number one network comedy. Marsai plays the sassy eldest twin Diane Johnson on the ABC hit comedy Black-ish. Alongside an all-star cast including Anthony Anderson, Tracee Ellis-Ross and Lawrence Fishburne, the young starlet has stolen the hearts of viewers who tune in every week to see her mischievous antics on the show. Her work on the award winning show has garnered her industry recognition including the Young Artists Awards and the NAACP Image Awards.With opportunities presenting themselves daily, Marsai is excited about what's to come and when asked what she wants to do when she grows up her answer is simply "To be a legend." In addition to acting, she loves singing, dancing, writing and directing her own movies and videos.