Before Grant Gustin was The Flash, he was singing his heart out on Glee.
Candice Patton? She had roles on The Young and the Restless, The Bold and The Beautiful, and even Grey's Anatomy.
Take a look below to find out what your favorite cast members were up to before they were on The Flash.
Grant Gustin, Then...
Before Grant Gustin was Barry Allen, he was Sebastian Smythe on Glee. He also appeared on several episodes of The CW's 90210, and one episode of CSI: Miami.
Grant Gustin, Now...
Grant Gustin gave up his singing career to be a superhero, and you can now catch him as the lead character on The Flash.
Candace Patton, Then...
Before she was Iris West, Candace Patton had roles on The Young and the Restless, The Bold and the Beautiful, Entourage, and Heroes, among many others. She even appeared on one episode of Grey's Anatomy.
Candace Patton, Now...
Now, Candace Patton plays the important role of Iris West, who is also Barry's best friend, on The Flash.
Danielle Panabaker, Then...
Daniella Panabaker had several television appearances before starring on The Flash. In addition to her role on the mini-series, Empire Falls, she appeared on such shows as Summerland, Grey's Anatomy, Bones, and Malcom in the Middle.
Danielle Panabaker, Now...
Now, Danielle Panabaker is best known for her role as the incredibly intelligent Caitlin Snow on The Flash.