Gender: Masculine Programming, though Lex would tell you otherwise
Appearance: A one-wheeled R2-D2 like utility droid. DC-09 has compartments all over him, particularly a large one on the back. DC-09 has a single, blue-glowing photoreceptor (eye).
Alignment: Neutral Good
Abilities: DC-09 has numerous concealed arms for working with things. He has a welder as well. A top compartment conceals DC-09's blasters, and the one on the back is a jetpack. There's also a magical forcefield generator somewhere in there. DC-09 can fire out, but you can't fire in.
Backstory: I honestly haven't thought of one. 'Tis a utility droid, probably got memory wiped anyway.