Detective Comics 01

Heroes

 * Batman (Bruce Wayne)

Villains

 * Dollmaker [First Appearance]
 * Joker, The [First Appearance]

Other Characters

 * Arkham, Dr. [First Appearance]
 * Barnes, Detective [First Appearance]
 * Bullock, Detective Harvey [First Appearance]
 * Carr, Oliva [First Appearance]
 * Gordon, Commissioner James
 * Hady, Mayor (Mentioned)
 * Pandora
 * Pennyworth, Alfred [First Appearance]
 * Rivers, Charlotte (Mentioned)

Beings in Batman in Detective Comics

 * Humans

Locations

 * New Earth
 * Sector 2814
 * Earth
 * Gotham City
 * Arkham Asylum [First Appearance]
 * Batcave, The [First Appearance]
 * Blackgate [Mentioned]
 * Uptown [First Appearance]
 * Roscoe's Pharmacy [First Appearance] [Destroyed]

Organizations

 * Gotham City Police Department

Synopsis
This is where that goes...