Characters

• Batman [Bruce Wayne]
• Robin [Dick Grayson]
• Mental Giant [Barney Barrows]

Credits

• Pencils: Win Mortimer
• Inks: Win Mortimer
• Letters: Ira Schnapp

Storyline

Wanting to be a Policeman terribly, young Barney Barrows discovers that he can't pass the mental test to become one. However, a freak explosion in the Police lab exposes Barney to radiation which swells his mental capacity and head. He figures out Batman's true identity and forces the Caped Crusader and Boy Wonder to do his bidding.

Characters

• Batman [Bruce Wayne]
• Robin [Dick Grayson]
• Mental Giant [Barney Barrows] (villain, reforms)
• The Mental's Mob [Kyler
• rest unnamed] (villains)

Credits

• Script: Edmond Hamilton
• Pencils: Dick Sprang
• Inks: Charles Paris

Characters

• Casey

Credits

• Script: Henry Boltinoff
• Pencils: Henry Boltinoff
• Inks: Henry Boltinoff
• Letters: Henry Boltinoff

Credits

• Script: Jack Schiff
• Pencils: Win Mortimer
• Inks: Win Mortimer
• Letters: Ira Schnapp

Characters

• Captain Compass [Mark Compass]

Credits

• Script: Otto Binder
• Pencils: Joe Certa
• Inks: Joe Certa

Characters

• Little Pete

Credits

• Script: Henry Boltinoff
• Pencils: Henry Boltinoff
• Inks: Henry Boltinoff
• Letters: Henry Boltinoff

Credits

• Script: Martin Naydel
• Pencils: Martin Naydel
• Inks: Martin Naydel
• Letters: Martin Naydel

Characters

• Roy Raymond

Credits

• Pencils: Ruben Moreira
• Inks: Ruben Moreira