Detective Comics (vol. 1) #41 (July 1940):
“A Master Murderer”
by Bill Finger, Bob Kane, Jerry Robinson

Detective Comics (vol. 1) #41

Title: “A Master Murderer”

Medium: comic

Cover date: July 1940

Publisher: DC
Written by: Bill Finger
Art by: Bob Kane, Jerry Robinson

10 characters in this story:

(Click links for info about character
and his/her religious practice, affiliation, etc.)
Pub. #
Batman Batman (Bruce Wayne) hero
CBR Scale: ICBR Scale: S Episcopalian / Catholic (lapsed); atheist
Batman family; Quinntets...  DC 11,112
Nightwing Robin (Dick Grayson) hero
CBR Scale: I Christian (denomination unknown); raised Gypsy/Roma
Batman family; Super Friends...  DC 4,498
The Masked Man (Mr. Graves) villain
CBR Scale: I manifestly non-religious
[art instructor; master engraver] DC 1
Mr. Blake supporting character
 indeterminate  [business owner; principal] DC 1
Blake's School for Boys supporting character group
  [middle school] DC 1
unnamed homicidal maniac
(7-panel cameo)
  [mental patient] DC 1
Mr. Greer
(5-panel cameo)
supporting character
 indeterminate  [teacher] DC 1
Mr. Hodges
(5-panel cameo)
supporting character
 indeterminate  [history instructor] DC 1
Ted Spencer
(2-panel cameo)
supporting character
 indeterminate  Blake's School for Boys DC 1
unnamed superintendent
(1-panel cameo)
supporting character
 indeterminate  [janitor] DC 1