Cassandra Cain (Earth 1)

Cassandra "Cass" Cain is a young thief in Gotham City who was hunted by Black Mask after stealing the Bertinelli diamond from his right-hand, Victor Zsasz.
== Biography ==
=== Early life ===
Cassandra Cain lived in a flat in Gotham City with her foster parents. They were somewhat abusive towards her and often got into loud shouting matches.
=== Targeted by Black Mask ===
Cass was a pickpocket within Gotham City and her activities resulted in her becoming the focus of a number of unsavory characters when she was arrested after unwittingly swallowing a stolen diamond that was the key to unlocking the fortune of the slaughtered Bertinelli crime family. Roman Sionis, the criminal kingpin who also went by the alias Black Mask, hired Katana to retrieve the diamond, but also put out a general reward of $500,000 for anyone who could bring Cain back to him alive.
=== GCPD Raid ===
Sionis sends Katana, a member of The Suicide Squad to break into GCPD Station to get Cain and to recover the diamond for him, under the threat of death, and also places a bounty on Cassandra. Katana raid into The GCPD Station to get Cain but Babs discover it and hacked into the station and freed Cain and the pair escape.
While hiding out in Babs' apartment, they bond and Cassandra saw that Babs is Batgirl, she wants Babs' to return to crime fighting but can't because after Joker shot her and paralyzed her. 
=== House Invasion ===
Bab's place is later bombed by criminals looking for Cassandra, so Babs take Cain out of Gotham for good but was confronted by Katana, who wants Cain. Barbara begs her to let them go and Katana let them go.
=== The Final Fight Against Black Mask ===
Black Mask learns about Gordon and Cain are headed out of town and goes there to confront them. Dinah notifies Montoya of the rendezvous, but her betrayal is noticed by Zsasz, who informs Sionis. A devastated Sionis dons his ritualistic mask from which he gets his nickname, "Black Mask".
At the borders of Gotham, Montoya and Katana arrives and meet Babs and Cain but Zsasz arrives and holds Dinah at gunpoint, but he is killed by Helena, who reveals he was the last of her family's killers.
Montoya reveals that Sionis was the true mastermind behind the Bertinellis's massacre. He had them killed trying to get the diamond. A stand-off ensues until they realize Sionis has arrived with a small army of masked criminals. Using Babs' old gear, the makeshift team of six women withstand and repel the attack.
During the battle, Cassandra is captured by Sionis, while Dinah reveals her metahuman ability of supersonic-level screaming, defeating several of the mobsters. Babs gives chase and with assistance from Helena, the pair pursue Sionis. At a nearby pier, Sionis prepares to kill Cassandra, who pulls the ring from a grenade that she took from the weapons chest. Babs threw it at a tank and causes an explosion along with Sionis. Babs and Cain escape from the explosion.
=== The Birds of Prey ===
In the aftermath of destroying Sionis' criminal empire, Cain dons a new suit and calls herself Orphan. Using the money within the accounts hidden inside the diamond, Cain joins with Dinah, Helena, Cain, and Montoya in establishing a team of vigilantes called the Birds of Prey.
== Relationships ==
=== Family ===
* Foster parents
=== Allies ===
* Birds of Prey
** Barbara Gordon/Oracle
** Dinah Lance/Black Canary
** Helena Bertinelli/Huntress
** Tatsu Yamashiro / Katana
** Renee Montoya
=== Enemies ===
* Gotham City Police Department - detainers
* Gotham City Hunters - attempted captors
* Black Mask's criminal organization
** Roman Sionis/Black Mask † - captor, attempted killer and almost victim
** Victor Zsasz † - attempted killer