Dark Knight's Black Agents
Like the rest of the Batman family, Spoiler has no superhuman powers. However during Gotham Underground the Penguin gave her an unknown device which allowed her to become completely invisible.
Excellent stealth abilities, moderate acrobatic and hand to hand combat abilities which were later honed by training with Batman.
Average strength for a teenage girl in good physical condition.
Stephanie suffers the same weakness of any normal human without super-powers such as illness, injury and the ability to die.
As Spoiler, Stephanie carried a belt similar to that used by other Gotham vigilantes containing a grappling hook, tracking devices, and various other crime-fighting paraphernalia. During Gotham Underground the Penguin gave her an unknown device which allowed her to become completely invisible. According to Tim Drake, this “ability” was achieved through stolen technology.
After Stephanie took on the Batgirl identity, Barbara Gordon designed a new costume for Stephanie more in line with the rest of the Bat-family’s. It is equipped with armor and insulation against ballistic, flame, and electrical attacks. Stephanie’s Batsuit also carries a wireless relay within the cowl, permitting her to remain in contact with Barbara. The suit also allows Barbara to monitors Stephanie’s vital signs. Stephanie now also uses a collapsible bo staff, similar to the one that Tim Drake uses and implied that she has been trained by Drake and Cassandra Cain in using it before assuming the Batgirl mantle.
Spoiler: Batarangs, grappling hook, gas bombs, laser torch, invisibility device.
Batgirl: Batarangs, grappling hook, gas bombs, laser torch, collapsible bo-staff