Cairn was first introduced as a New York City police officer.1 Later she was transformed by a mutate of Baron Helmut Zemo into a mute bat-winged entity known as Nocturne.2 Following her transformation she had several encounters with Spider-Man. At one point she met, cared for and allied herself with the sometime-villain Puma.3 Cairn's whereabouts are currently unknown.
The Initiative
Angela is being considered as a "potential recruit" for the Initiative program, according to Civil War: Battle Damage Report.4