I've actually sort of scientifically based my powers (Well, as scientifically as you CAN base superpowers. Just the explanation, basically. I'm not a physicist or anything like that, so this is basically just a layman guessing.)
Name: Thundersmith
Costume: Black and gold tough leather jumpsuit, stabproof. A helmet that covers everything but my mouth and nose. Black armoured plexiglass visor.
Powers: Manipulation of electric currents and all conductivity. Can fire electrical blasts by building up electrical energy in myself by increasing the electrical output of my cells and then changing the electrical polarity of air molecules in a path, thereby causing a certain area of air to become hyperconductive and transferring the blast via static electricity.
By altering the polarity of air molecules above and below me (causing those below me to attract one another, creating lift, and causing those above me to repel, creating a vacuum) I can attain some flight, or, at the very least, gliding. This technique of vacuum plus force can also be used to change the trajectory of bullets to some extent. I can bend the path, but nothing like a right or 180 degree angle.
I can build up electricity in objects by pouring electrical energy into it, then causing the outer surface to be entirely unconductive. Then I can, by changing the surface conductivity, cause an explosion of electrical energy. This can be either used to plant mines and the like, or as a throwing weapon, a la' Gambit.
Because I have total control over the flow, I can hack a computer or an electronic lock simply by touching it and altering the flow of electrical energy inside to the point where it has the requirements to display whatever information I need (or unlock the door).
Yes, I know. I've put far too much thought into this.