Molly Quinn: 'Superman: Unbound' at WonderCon

Molly Quinn arrives on the red carpet at the Superman: Unbound panel during WonderCon Anaheim 2013 held at Anaheim Convention Center on Friday (March 29) in Anahaim, Calif.

The 19-year-old Castle actress was joined at the panel by her co-star, actor Matt Bomer!

PHOTOS: Check out the latest pics of Molly Quinn

“I wanted to make sure that she was strong,” Molly shared in an interview about what key elements were important to her portrayal of Supergirl. “That even when she argued and had her little moments of teenage angst that she knew deep down inside what she was going to do.”