In the "One Year Later" storyline in "Supergirl", Kara takes up the mantle of Nightwing in an attempt to free the natives of Kandor. Ultraman, masquerading as Kal-El and working in concert with the Saturn Queen, has taken control of the bottle city. Kara Zor-El is the city's Flamebird; she prevents Ultraman's forces from executing the captured Power Girl. Power Girl is forced to leave Kandor with Kara (against her better judgment) after Saturn Queen reveals to Supergirl information about Supergirl's past and purpose. This causes another rift to grow between the two women, as Power Girl feels Supergirl left an entire city of people to suffer, all because of her own selfish desires. This animosity is still on display when she next encounters Supergirl.