Smack in the Middle

Main Characters

 * Dynamic Duo
 * Batman (Bruce Wayne)
 * Robin (Dick Grayson)
 * Alfred
 * Aunt Harriet Cooper
 * Gotham City Police Department
 * Commissioner Gordon
 * Chief O'Hara

Villains

 * Molehill Mob
 * The Riddler
 * Harry
 * "Robin" (Molly)

Other Characters

 * Moldavian Prime Minister
 * World's Fair Guest (first appearance)
 * Joan of Arc (first appearance) (mentioned)
 * Bruce Wayne's Uncle (mentioned)

Organizations

 * Molehill Mob
 * Gotham City Police Department
 * Gotham City National Bank (first appearance) (mentioned)

Objects

 * Batmobile
 * Bat-Phone
 * Bat-a-rang
 * Bat-Gauge (first appearance)
 * Batsignal (mentioned)
 * Bat-Computer
 * Batman's Laser Gun
 * Homing Transmitter (first appearance)
 * Mammoth of Moldavia (first appearance)
 * Laughing Gas (first appearance)

Locations

 * Gotham City
 * World's Fair
 * Republic of Moldavia Pavilion
 * Gotham City Police Headquarters
 * Mole Hill Mob Headquarters
 * Coolidge Square Station (first appearance)
 * Orleans Cove (first appearance)
 * Gotham City National Bank (first appearance) (mentioned)
 * Gotham City Beach (first appearance) (mentioned)
 * Wayne Manor
 * Batcave
 * Republic of Moldavia (mentioned)