Lillian is Herobrine's sister, and the main antagonist in OutKookDrive's fanfiction book "Herobrine's Legend," She was accidentally killed by young Herobrine when he left her in a pit, where she remained stuck. She then becomes the Ender General, and leads the Ender Army to find the Ender Blade. She remains in contact with a form of Herobrine's dead brother, Alex.
Herobrine (in the disguise of Steve) tells Nya that he had a sister, talking about himself in the third person. However, he changes the story of how she died (probably to prevent Nya from knowing the truth.). In his version, his sister "Stephanie" went searching for him when he went missing, and was found dead, with white eyes.