Batgirl is a DC Comics superhero, a female crime-fighter modeled after and associated with Batman.
Although a mostly-forgotten Bat-Girl appeared in Batman comic books of the early 1960s, the most well-known Batgirl was a collaboration between DC editors and the producers of the Batman television series and debuted in both mediums in 1967. She was Barbara Gordon, the adopted daughter of Gotham City Police Commissioner James Gordon.
The Batcave is the secret headquarters of fictional DC Comics' superhero Batman, (the dual identity of millionaire playboy Bruce Wayne), consisting of a series of subterranean caves beneath his residence, Wayne Manor.
It is a place to monitor crime activity, and to be a sanctuary for Bruce.