The hero known as Secret was once an ordinary girl named Greta Hayes. She was murdered by her brother, Billy, who would later become the supervillain known as Harm. Because of the manner of her death, Greta remained stuck on this plane of existence, a gateway between the living and the dead.
- This version of the character is exclusive to the continuity of the television series Young Justice and is an adaptation of Greta Hayes/Secret. The original character was created by Todd DeZago and Todd Nauck and first appeared in Young Justice: The Secret #1.
- 1 Appearances of Greta Hayes (Earth-16)
- 2 Images featuring Greta Hayes (Earth-16)
- Quotations by or about Greta Hayes (Earth-16)
- Character Gallery: Greta Hayes (Earth-16)