Stormhammer
Origin Story:
The girl who would be Stormhammer found a mysterious package containing an immensely powerful weapon, and decided this means she had been chosen by destiny! (Actually, it was probably just misdelivered, but good luck convincing her of that.)
Armed with the overwhelming might of the Stormhammer, she seeks to make her place in the Rogue Isles, to pay her mortgage, and to stop crashing into things quite so often while flying.
Powers:
Strong enough to swing a heavy rocket-powered hammer with some control.
Rocket flight with limited maneuverability.
Armored costume.
Immense stubbornness.
Recent Events
Her father is a union organizer working in Sharkhead who hasn't called home in a while. (He's probably dead.)
Her mother is on an extended trip in Europe, and hasn't written in a while (She probably abandoned them.)
She took a trip to Scandinavia in hopes of finding the Norse gods to ask them about her hammer, but only got as far as Ikea world headquarters.
To help make ends meet between crimes, Stormhammer is working part-time as a housekeeper for a neighbor who is probably either a supervillain, a dominatrix, or a dominatrix supervillain.