Sasha Van Dahl was the daughter of Grace Van Dahl, stepdaughter of Elijah Van Dahl and stepsister of Oswald Cobblepot. She had a sadistic streak and didn't think twice about seducing her stepbrother to make herself the only heiress to her stepfather's fortune.
Sasha and her brother, Charles, grew up poor and abused by their father. Their mother worked as a waitress at a diner where she met Elijah. Grace, sensing an opportunity for social climb, grew close to Elijah and he offered her and her children sanctuary at his estate. They later married, making Sasha heir to Elijah's massive fortune and catapulting him into a life of privilege.
Meeting Oswald Cobblepot During a visit to the Gotham cemetary, Elijah met Oswald Cobblepot and discovered that he was his son from a previous relationship. Elijah took Oswald home and introduced him to his new family, declaring over dinner that Oswald was his only biological son. Grace, Sasha, and Charles tried to forceÂ Oswald away by outing him as a criminal, but Elijah vouched for him, believing he had changed.
Sasha tried to seduce Oswald but he rejected her ouright, leaving her frustrated. When Elijah's heart condition worsened and he seemed inclined to include Oswald in his will, Charles was present when Grace and Sasha conspired to poison Oswald. Instead, Elijah drank the poison and died.
After Elijah's death, Grace and the children turned on Oswald and made him their servant. Grace and Sasha insulted his cooking. Their constant bullying eventually broke through Oswald's Arkham conditioning, causing him to snap and kill Charles and Sasha. He cooked them into pies which he served to Grace before killing her, too.
- "Wrath of the Villains: Mad Grey Dawn"
- "Wrath of the Villains: Prisoners"
- "Wrath of the Villains: Into the Woods"
- In the Harley Quinn show Oswald Cobblepot has a sister called Ms. Cobblepot.