Supergirl season two is also adding recurring roles for Katie McGrath as Lena Luthor, Floriana Lima as Maggie Sawyer and Tyler Hoechlin as Superman.
Along the way, she will team up with Superman (Tyler Hoechlin) to battle new villains, as she strives to balance her personal life with her life as a superhero.
Now, star Melissa Benoist has revealed that Carter has finally made her way to the set and posted a photo of their meeting.
If you missed an episode of Supergirl, or just need a refresher of what happened, you can read our weekly recaps by clicking here.