Secret

History

Robin, Impulse and Superboy helped save Secret from the Department of Extranormal Operations. They were holding her against her will. Secret is incorporeal, able to take on a variety of appearances. Eventually it is revealed that Secret was once an ordinary girl named Greta, whose adoptive brother Billy kills her as part of his plan to become a supervillain. After her death Greta remained stuck on this plane of existence. She becomes a gateway between the living and the dead.

Secret joined Young Justice with Wonder Girl and Arrowette. She was often referred to as Suzie due to the fact that her real name was unknown. Secret became good friends with the two girls. She developed a crush on Tim Drake/Robin, and often defends his actions and his leadership without doubts and was jealous of Spoiler, Robin's girlfriend.
 
During the "Sins of Youth" arc, where the teen heroes became adults and vice versa, Secret was in protest of being changed back into a kid, preferring to remain an adult, so she can be respected.  But she is over ruled and returns to her teenage state.

After many adventures Darkseid strips her of her powers turning her back into an ordinary, living girl. Ironically this is just as she always wanted to be. She now attends the Elias School for Girls, along with Cassie Sandsmark a.k.a. Wonder Girl and Cissie King-Jones a.k.a. Arrowette. She is a void to the after afterlife and her brother is Harm.

Powers and Abilities

Able to take on a variety of appearances, she is a gateway between the living and the dead. She is intangible.