Grant Gustin is an American actor and singer. He is widely known for portraying Barry Allen/The Flash, first appearing as the character in The CW's Arrow in 2012. Gustin later led the spin-off series The Flash as the title character from 2014 onwards. He had a recurring role as Sebastian Smythe in Glee. Gustin has also appeared in several films, including A Mother's Nightmare, Krystal, Rescued by Ruby, and Puppy Love.