Born and raised in Norfolk, Virginia, Grant always enjoyed performing. While attending Granby High School, he attended the prestigious Governor’s School for the Arts program to focus on musical theatre and appeared in Cabaret, All Shook Up, and Little Shop of Horrors. After graduation, Gustin was admitted into the BFA Music Theatre Program at Elon University in North Carolina. It was during his sophomore year that he decided to audition for the Broadway revival tour of West Side Story and was awarded the role of Baby John and toured across the country with over 400 performances. After wrapping the tour, Grant joined the third season of the popular musical series, “Glee” in which he played Sebastian Smythe, the lead of Dalton Academy's Warblers singing group. On the film side, Grant was seen in the independent film Krystal, directed by William H. Macy. The cast included Felicity Huffman, Rosario Dawson, Nick Robinson, and Kathy Bates. Grant was also part of the ensemble cast of the indie drama Affluenza, directed by Kevin Asch. Grant starred for nine seasons on the globally successful series, The Flash. His role as Barry Allen brought Grant widespread acclaim as well as several awards. Grant has also made several crossover appearances on Arrow, Legends of Tomorrow, and Supergirl, as well as having guested on such series as 90210 and CSI: Miami.