I remember that one! The most impractical attack droid the empire had. He keeps his gun over his head but has no way to reach it.
His impracticality is what made me want to make him. It wouldn't have been nearly as fun if it looked normal. I'd have loved to have been there when the Kenner employees were coming up with this stuff. They all said, "yeah stick 2 1B's arms on it's shoulders and throw Zuckuss' (4LOM) gun in it's hands, perfect. Let's bring this to our bosses"
Though if you think about it the rebels won't see him coming. They'll say oh look an Imperial Droid but he's walking the other direction and then peripheral vision shot kills them all.