DC's slate of Arrowverse shows is ever-expanding, and so is the list of actors who almost snagged a role. Which Arrowverse superheroes were almost played by someone else?
Kara and Siobhan Smythe/Silver Banshee become enemies from the moment they meet in this series, while in the "New 52" continuity, they become best friends and later roommates. Siobhan turns out to be the only being on Earth able to understand Kara's Kryptonian speaking due to her Silver Banshee nature, and the first to recognize her as a hero.
My name is Kara Zor-El. I'm from Krypton. I'm a refugee on this planet. I was sent to Earth to protect my cousin. But my pod got knocked off course, and by the time I got here, my cousin had already grown up and become Superman. I hid who I really ...
Sometimes a green light can be seen in the reflection of Kara's glasses. This is due to the anti-reflective coating on the glasses and it's not a reflection of a green screen.
A few episodes which majorly involve the Red Daughter (a clone of Supergirl raised in the Russian region of Kaznia), have a different title card for her appear briefly ("Red Daughter" in Russian with her shield symbol) before changing back to Supergirl's original title card.