Read the first chapter, that is basically the whole backstory and description of Amber and Kara. If you want a short description, basically, Kara and Supergirl are different people. They are twins but Kara doesn't even know she is Kryptonian, Amber was raised in the DEO as Supergirl. Please enjoy reading and Vote/Comment to let me know what you think. I don't own the characters, well, I own Amber's character but sort of not... Anyway, CW owns the characters that they created and I own the new characters!