Haha, I am so down. I've got some suggestions
The Detective- Cynical, worldly, and highly jaded, you're a trenchcoat wearing, cigar smoking, revolver wielding, street-scum scouring P.I. You know the cold, hard reality of this world, and you trudge along the underbelly of the criminal world with that beneath your dirty stained fedora. You're street-wise with a witty sense of cynical humor, but you often draw looks for you're odd scowl and bizarre scruff.
The Kid- Young, naive, idealistic, with a countable number of minutes since your balls have dropped. You are out to save the world and stand up to the bad guy. In all likely situations, you would be shot immediately upon your utter lack of protection, planning, and backup, but somehow you possess luck and convenience beyond all measurable ability. You can't actually do that much, but you manage to be a pain in the bad guys' ass constantly nonetheless. You either are somehow inexplicably connected with the villain or have read too many comic books. You speak in cliches, hallmark cards, and otherwise laughable monologues about friendship and love.
The Whiskey Priest- A large tragedy in your personal life has lead to a somewhat melodramatic crisis in faith. You've taken up some vice, either drinking, smoking, street-fighting, or heroine, to deal with this. However, your slightly cynical, but otherwise really unimportant to anyone besides yourself, crisis in faith will be put to the test when you are faced with some otherworldly demonic/celestial threat. Better get yo sh*t together. After all, who else is going to pin down that underage child and perform that exorcism?
Antagonists
Creepy Child- Nothing creepier than a little kid with crazy eyes, emo hair, and a variety of bizarre scars or deformities. Whether possessed by a demon, climbing out of televisions, or simply singing creepy lullaby songs, those creepy kids always seem to appear in bathroom mirrors.
The Sociopath- Nothing more conveniant than a guy with no emotions or empathy, eh? Somehow lacking emotions also makes you a genius. You don't feel, you often have a deadpan sense of humor, and despite your horrific deeds, we love ya. Why? Well, because we just love how dark you are. How daring!