Laura Vandervoort played Kara-El/Kara Kent on TV’s Smallville from 2007-2012, appearing in 12 episodes of Season 7, the Season 8 episode “Bloodlines”, and the Season 10 episodes “Supergirl” and “Prophecy”.
The Smallville Season 7 DVD set included a bonus feature called Smallville Legends: Kara and the Chronicles of Krypton which consists of six 3-minute webisodes that show the events that led to Krypton’s destruction according to the Smallville mythos. The webisodes are available on YouTube.
In this story Kara begins to uncover her father’s plan to betray the Council of Krypton for General Zod’s rebel army. With Zor-El being a key figure in the Kryptonian Civil War, Kara finds herself in the middle of the chaos. The story explains how both Kara and Kal ended up being sent to Earth. The webisodes have been reviewed at Supergirl Comic Box Commentary.