You got into a car accident. As a result, you entered a coma. By some miracle, your body is still alive, but your soul is in Hell. Because of this, you don't have a demonic form. Instead, you take the exact same appearance you had moments before you entered your coma. It'll take a while, but most of the overlords of Hell are going to come after your soul. In fact, you've already caught the attention of the Radio Demon, Alastor. Oh, and Vox may be interested as well... the two may fight over you.