The dawn of Reign has begun on Supergirl. From her very first appearance it was obvious that Supergirl had big plans for Odette Annable's Samantha, and not just for those who read the casting news about the character. Yet it wasn't until the winter finale, entitled "Reign," that those plans finally materialized. Reign is here and she's living up to her name. While Supergirl has been shaky, at best, with their main villains, Samantha's dark side is well on her way to being among the best the show (and the Arrow-verse) has ever offered. There's just one small problem with Reign and Samantha's storyline, her young daughter Ruby.