Warning: SPOILERS for DCeased: Unkillables #1
Cassandra Cain returns as Batgirl to face a planet overrun by undead hordes in DCeased: Unkillables #1. The alternate-universe storyline finds the majority of Earth's residents transformed into zombie-like Anti-Living creatures, with only a handful of the DC Universe's heroes and villains left uninfected. In the carnage-filled first issue, a new Dynamic Duo forms from two surviving members of Batman's extended family, one of whom still wears the cowl of the Bat.
Known by several costumes and codenames (who in Gotham City isn't?), Cassandra Cain is specifically Batgirl here, clad in a version of her first Bat-Suit, with its distinctive featureless mask. The character of Cassandra (also known affectionately as Cassie or Cass) appears in the Bird of Prey film, and in comics form has used the monikers Black Bat and Orphan. The Batgirl identity was originated and is currently occupied by Barbara Gordon in main DC continuity.
DCeased: Unkillables #1's most harrowing sequence follows Jason Todd as he discovers that the core Bat-Family members Bruce Wayne, Dick Grayson, Tim Drake, and Barbara Gordon have all been slain. Apparently Damian Wayne is alive, status unknown. Jason (in his Red Hood persona) reunites with Cassandra and Jim Gordon while defending Gotham City from the zombie onslaught. They escape in the Batmobile, wherein it becomes clear that Cass is the last Batgirl remaining in the world. Later, Gordon makes a point of introducing Cassandra and Jason as "Batgirl and Robin," a stirring moment given the long, oft-tragic history of the Batman-and-Robin pairing. Also noteworthy: Cassandra's mother, the assassin Lady Shiva, appears as part of a small group of un-zombified survivors, perhaps setting up a meeting in a future issue.
For this particular apocalypse, Cassandra is an interesting choice to represent the iconic cowl. Her defining martial skill is the ability to decipher body language so as to anticipate opponents' actions before they happen, a pre-verbal "power" she gained from an upbringing without conventional language acquisition. As per the classic trope, zombie hordes do not talk much, although they have very distinctive body language (contrast with Batman's legacy foes, Riddler, Penguin, et al., who all tend to be more chatty than physically expressive). In this sense, Cass is perhaps best-equipped out of all the Bat-People to deal with a wordless lumbering mob.
Will the other Bat-Folks return? Will Cass in effect be the last to Bat? DCeased: Unkillables #1 is available now.