- Exiled from Continuity: The apparent reason as to why Cassandra Cain didn't appear in the New 52 for a long while. Harper Row was her "replacement".
- Screwed by the Network: Stephanie's book was cancelled to make way for the relaunch. Cassandra Cain was pretty much in the same boat though got it much worse since hers was way before that point. Dumb thing too was that the book was doing well and was well liked by her fans. But the higher ups didn't share the same sentiments when it came to the character and ended her book.
- What Could Have Been:
- In the early 2000's writer Gail Simone pitched an idea for the direction of Cassandra Cain's series if she had taken over as its writer. Cassandra, after saving a Protestant minister from a vicious robbery, would continuously visit him in the hospital and, over time, become a devout Christian and convert after seeing the strength of his personal devotion and willingness to forgive his attackers. Her activities would shift to a protective role over the more downtrodden members of Gotham society, the transients and homeless and runaways, and she would switch to an all-white costume. Eventually she would become known as "Angel of the Bat" instead of Batgirl. Gail, a self-professed atheist whose comics often exemplify her "liberal" viewpoints, said that her intention was to represent a part of society that is extremely neglected in comics, as almost all depictions of religious or conservative figures was as dogmatic, prejudiced and stupid characters. She wanted an example of the transformative power of faith and felt that, even if it did not match her own beliefs, it would be a good exploration of the character. Instead, Cass made an apparent FaceHeel Turn and became a leader of the League of Assassins. As Simone put it, apparently, becoming a Christian is more controversial than becoming a serious murderer.
- The miniseries "Batman: Gates of Gotham" was originally conceived as a solo story about Cassandra. The final product heavily featured her, but she had to share it with her brothers.
- The montage of the Black Mercy induced coma dreams Stephanie has at the end of her ongoing series hinted at further storylines.
- When DC decided that they didn't want Cassandra to be Batgirl anymore, they initially decided to put Barbara Gordon back in the role. When that was shelved, they wanted to replace her with Charlie, but her creator, Gail Simone, wrote a long letter to DC explaining why Charlie wasn't a good fit for the role and they respected her wishes. So, instead, Stephanie Brown was Batgirl for two years, after which Barbara Gordon returned to the costume.
- Batgirl was going to receive a series in the All-Star DC Comics line, written by Geoff Johns and drawn by J G Jones, and been a story akin to The Long Halloween, but due to the negative reception of All-Star Batman & Robin, the Boy Wonder (although Barbara Gordon appears in ASBAR, this version would've been unconnected), leading to the line being shelved in favor of Earth One.
Trivia / Batgirl